--- Log opened Sun Mar 22 00:00:29 2015
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02:38 < archels> nmz787: sadly not at this time, due to the way in which the money is flowing here
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05:31 < fenn> heath: sorry yesterday i was busy at the most awesome garage sale ever, acquiring hardware. no plans for today though so i'm down for whateva
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05:44 < kanzure> boop
05:46 < kanzure> strongly tempted to design gundam part with solvespace
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05:49 < kanzure> here is some evidence that others read papers https://news.ycombinator.com/item?id=9245467
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06:45 < JayDugger> Which part of which gundam?
06:45 < kanzure> unspecfied. why do you ask?
06:50 < JayDugger> Sounded interesting but vague.
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07:02 < fenn> do it.
07:02 < fenn> do it!
07:04 < kanzure> "this is the 5th left angle bracket"
07:05 < fenn> lol https://en.wikipedia.org/wiki/How_to_Read_a_Book#How_to_Read_a_Book_Video
07:06 < kanzure> "For unknown reasons sometime after their original publication, these videos had been lost for many years."
07:06 < fenn> the lost ancient wisdom desperately needed by the world's children
07:06 < fenn> step 1: look at the cover
07:07 < kanzure> step 2: ask someone else to help
07:08 < fenn> step 3: post your own video of you reading a book
07:09 < kanzure> that probably already exists. probably a bunch of bored parents reading children's books on youtube.
07:09 < cluckj> there's a book about how to not read books
07:10 < cluckj> I bought it for my mom after I said I didn't want to read some garbage book she sent to me
07:12 < cluckj> http://www.amazon.com/Talk-About-Books-Havent-Read/dp/1596915439
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07:16 < kanzure> hmm so my yesterday idea for brain emulation doesn't make sense because there's no particular reason that a data center of 10k individual neural tissue cultures would add up to even dog brain ability or human brain ability.
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07:18 < cluckj> there's a lot of useless stuff the human brain does that you don't need to have cells do in a dish
07:19 < cluckj> like...breathe or poop
07:32 < kanzure> 1 million tissue culture devices (each with 1k neurons per tissue culture)) at $1k per device is already $1 gigabucks
07:33 < kanzure> i dunno why i picked $1k
07:33 < kanzure> if you are going to make a million then you would probably get the cost per tissue culture down lower than $1
07:33 < kanzure> lower than $1k
07:35 < archels> kanzure: that's the same as saying that 10k insect brains aren't going to add up to a rat brain
07:35 < archels> that doesn't make studying and emulating insect brains any less valid
07:36 < kanzure> hmm
07:37 < kanzure> but nobody in their right mind would spend $1B on insect brain cultures? i mean that's not even an emulation yet, that's the prep work to start working on emulation :-).
07:38 < archels> $1B might be a little over-the-top, but look at all the interest in OpenWorm/Si Elegans, and that beast only has 302 neurons
07:38 < kanzure> another thing is that this system looks an awful lot like "a giant neural network in a simulation".. except it's physical instead.. if izhikevich's pile of neurons don't do anything, why would mine?
07:39 < archels> ^ best argument against this line of study
07:39 < kanzure> huh?
07:39 < kanzure> that's not a good argument at all
07:39 < archels> i.e. the whole "let's throw a bunch of neurons together in a culture and hook them up to sensors/effectors"
07:40 < kanzure> no, you're supposed to tell me "simulations aren't anywhere near as detailed as the real thing"
07:40 < archels> that's not necessarily true at all
07:40 < kanzure> well they aren't.
07:41 < archels> of course how deep the rabbit hole goes is a huge open question, but we can get pretty detailed as it standds
07:44 < kanzure> if you are trying t oargue to me that our simulations/emulations are exactly equivalent to human brain operation, we so far have empirical evidence that you are wrong (we do not get human-brain-like results from our simulations)
07:45 < archels> no but now you're lifting it up to the whole-brain level; I was talking about a single-cell level
07:48 < fenn> i bet you could get the cost of a petri dish with optogenetic interface down to $1 if you make some drastic reductions in bandwidth and specificity for any particular neuron
07:49 < kanzure> you don't need single-neuron interfacing.... just some inputs and just some outputs. anything in between can go fuck itslef.
07:49 < archels> need for what though
07:50 < kanzure> ?
07:50 < fenn> light projection tech is still kinda expensive
07:50 < archels> fenn: any idea---ballpark figure---what a 2-photon setup would actually cost?
07:50 < archels> can't seem to find any figures via Google
07:50 < fenn> huh?
07:50 < fenn> $100k
07:50 < kanzure> what was wrong with electrodes, again?
07:50 < fenn> that's the science research markup though
07:51 < archels> ouch
07:51 < fenn> i'm just talking about like, a magnifying glass and dumb-phone screen :P
07:51 < archels> precision (what are you stimulating? what are you recording?) mostly, also durability
07:51 < archels> also this is tech from like 2 centuries ago, c'mon
07:51 < kanzure> you don't care what you are stimulating (just that you are in the same location)
07:51 < kanzure> and you don't care about what you are recording (as long as you are recording something)
07:51 < fenn> i thought electrodes tended to kill the cells you are interested in
07:52 < kanzure> a certain amount of hardware depreciation is acceptable. just have a replacement schedule.
07:52 < fenn> it's on the order of a couple months
07:52 < archels> fenn: don't think it's quite that bad, optogenetics also has some toxicity associated with it
07:52 < fenn> yeah but blue light is worse than, say, infrared
07:53 < fenn> another engineering tradeoff...
07:53 < kanzure> having 1 million different cultures churn over the course of 4 months would be bad, maybe if it was like 1-10% churn/month
07:53 < archels> nah I mean with the proteins itself, and with the ions that the optically stimulated channels let in/out of the cell
07:53 < archels> but yeah light itself also
07:54 < fenn> kanzure: pixels are super duper cheap compared to electrode array elements
07:54 < kanzure> electrode array elements are like, typical mems stuff
07:54 < fenn> i mean a 2 MILLION pixel camera is like $0.50
07:54 < archels> oh, middle ground is CMOS array used as electrode array
07:54 < archels> not sure how far along that tech is by now
07:54 < fenn> like integrated plasmonics? or just a ram chip?
07:55 < archels> camera chip, more like
07:55 < fenn> right
07:55 < fenn> can that detect optical emissions from neurons?
07:56 < archels> afaik they were studying it more in the context of measuring capacitively coupled electrical signals
07:56 < kanzure> btw i don't expect the cost of culture devices/chambers to be stimulation and recording, but rather things like tissue media food flow
07:56 < fenn> it seems like it should detect near-field light, but having something that close to the element makes all the angles wrong
07:56 < kanzure> (and networking equipment)
07:57 < fenn> food, seriously? that's the cheapest part
07:57 < kanzure> food itself is cheap
07:57 < archels> dunno, MEAs can be a couple hundred euros easily
07:57 < archels> and if you need to throw them out every 3 months...
07:57 < kanzure> these aren't just black boxes that you initialize and then lock down
07:57 < fenn> oh noes i have to connect a tube
07:57 < kanzure> i don't think it's just a tube
07:57 < kanzure> not sure
07:57 < fenn> two tubes
07:58 < kanzure> hah
07:58 < kanzure> you just doubled the tube budget!
07:58 < fenn> totally tubular man
07:58 < archels> also grad students are cheap
07:58 < archels> =)
07:58 < fenn> yeah just hook them up to some tubes and yer good to go
07:59 < archels> haha
08:01 < kanzure> i wonder if liquid cooling racks are directly compatible with this
08:01 < kanzure> or do people just submerge entire racks?
08:05 < fenn> liquid cooling is pretty rare in data centers
08:05 < fenn> only fancy mainframes like cray do immersion
08:05 < kanzure> was not aware that craystuff did that
08:06 < fenn> http://spectrum.ieee.org/computing/it/is-there-a-liquid-fix-for-the-clouds-heavy-energy-footprint
08:08 < fenn> "Because liquids are denser than gases, they are a more efficient medium to transport and remove unwanted heat." is not exactly true. steam has a higher enthalpy per unit volume than water
08:08 < kanzure> a friend mentioned to me once that air is cheaper and more efficient anyway
08:08 < kanzure> and also doesn't require special equipment compared to alternatives
08:08 < kanzure> soo... air.
08:08 < fenn> but water has a smaller boundary layer so it's more efficient to pump lots of it around in small pipes
08:09 < fenn> heat pipes are pretty cool (so punny)
08:10 < fenn> most laptops have them now
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08:24 < kanzure> hm
08:24 < ParahSailin> brain transplant of bouncer
08:24 < ParahSailin> its a p-zombie now im afraid though, no qualias
08:25 < kanzure> irc bouncer or physical bouncer? what are we talking about
08:26 < ParahSailin> irc
08:32 < kanzure> what is an insect brain good for anyway.
08:33 < kanzure> "Thomas DeMarse at the University of Florida used a culture of 25,000 neurons taken from a rat's brain to fly a F-22 fighter jet aircraft simulator.[100] After collection, the cortical neurons were cultured in a petri dish and rapidly began to reconnect themselves to form a living neural network. The cells were arranged over a grid of 60 electrodes and used to control the pitch and yaw functions of the simulator. "
08:33 < kanzure> oh, i thought it was like a <500 neuron culture
08:34 < kanzure> ( http://neural.bme.ufl.edu/page13/assets/NeuroFlght2.pdf )
08:34 < fenn> but did it fly
08:36 < kanzure> The typical performance of the network’s control was within 10 degrees of desired for both pitch and roll. However, as the high frequency stimulations increase the weights used to fly the aircraft these weights will eventually become too large resulting in over corrections from even the smallest in errors. Moreover, the rate at which pitch and roll channels change (as a result of the high frequency stimulation) over time can lead to ...
08:36 < kanzure> ... differences in control. This over correction is apparent in the data for the roll angles whose flight weights caused the aircraft to begin to oscillate."
08:37 < fenn> but did it fly
08:38 < kanzure> (figure 4)
08:38 < fenn> step 4 ask someone else to read the paper for you
08:38 < kanzure> "After, several minutes of flight, the network will slowly begins to correct for any errors in the flight path resulting in straight and level flight."
08:38 < JayDugger> Flying within 10 degrees of error on two axes means crashing.
08:38 < fenn> wow it's really tiny
08:39 < kanzure> oh leave it to the aviation person to ruin the party
08:39 < kanzure> hmm.
08:41 < fenn> i'm actually kinda surprised nobody has managed to make commercially viable biological information processing units yet
08:41 < JayDugger> I apologize. You can always walk away from crash in a simulator.
08:42 < fenn> compared to fabbing silicon the costs are really low per therblig or whatever it is they're doing
08:43 < fenn> even if you don't have electrodes stuck to every square micron, the neural culture can still do useful stuff
08:43 < fenn> it's just harder to debug
08:43 < kanzure> perhaps not, if that culture didn't really fly
08:44 < fenn> i would also think that directing the cell growth radially or with some other structured pattern would improve the i/o characteristics
08:44 < JayDugger> What does "therblig" mean here?
08:44 < fenn> .wik therblig
08:44 < yoleaux> "Therbligs are 18 kinds of elemental motions used in the study of motion economy in the workplace. A workplace task is analyzed by recording each of the therblig units for a process, with the results used for optimization of manual labor by eliminating unneeded movements." — http://en.wikipedia.org/wiki/Therblig
08:44 < JayDugger> Yeah, did that. I still don't follow.
08:44 < fenn> some kind of poorly defined information processing task
08:44 < JayDugger> Okay. Got it. Thank you.
08:45 < fenn> like for controlling a robot, say
08:46 < fenn> silicon gates are so cheap now i doubt commercial biological information processing will ever happen in the future
08:46 < fenn> but it totally could have happened
08:47 < fenn> also, supply chains and hardware malware
08:48 < fenn> silicon is cheap but you have to trust TSMC to make exactly what you tell them
08:48 < fenn> or <insert billion dollar fab here>
08:48 < kanzure> same with neurons though
08:48 < fenn> why?
08:49 < kanzure> there might be other hardware before/after
08:49 < fenn> afaik nobody knows how to implant latent malware into a neuron
08:49 < fenn> and if they did, you have a lot more control over the tissue replication process than you do over chip manufacturing
08:50 < fenn> yeh there will be other hardware but it's less fab intensive
08:51 < fenn> anyone here do macro photography?
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08:52 < fenn> i am wondering about correcting for chromatic abberation in software and RGB LEDs for illumination
08:53 < kanzure> demarse's earlier paper seems more comprehensive http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2440704/
08:53 < fenn> .title
08:53 < yoleaux> The Neurally Controlled Animat: Biological Brains Acting with Simulated Bodies
08:53 < fenn> why is it always simulated though
08:53 < fenn> warwick at least drove a toy robot around
08:54 < kanzure> "Cortical tissue (from day 18 embryonic rats) is dissociated (Potter and DeMarse, 2001) and cultured on a 60 channel multi-electrode array (Multichannel Systems) shown in Fig. 2. Each electrode can detect the extracellular activity (action potentials) of several nearby neurons and can stimulate activity by passing a voltage or current through the electrode and across nearby cell membranes (e.g., +/−600 mV 400 μs, biphasic pulses). ...
08:54 < kanzure> ... Dissociated neurons begin forming connections within a few hours in culture, and within a few days establish an elaborate and spontaneously active living neural network. After one month in culture, development of these networks becomes relatively stable (Gross et al., 1993; Kamioka et al., 1996; Watanabe et al., 1996) and is characterized by spontaneous bursts of activity. This activity was measured in real-time and used to produce ...
08:54 < fenn> simulated bodies miss out all the squitchy bugs that hardware bodies have and silicon can't deal with
08:54 < kanzure> ... movements within a virtual environment."
08:54 < fenn> s/silicon/symbolic control systems/
08:55 < fenn> one month eh
08:56 < cluckj> my blood glucose has a website now :D
08:56 < cluckj> blood in the cloud
08:56 < fenn> hook it up to your web toaster, web vending machine, and web coffee maker
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08:59 < cluckj> display my blood sugar on every web-enabled device in the house!!!!!!!!!!!!!!!!!!!
08:59 < kanzure> hook it up to taskrabbit or instacart and get cookies delivered
08:59 < cluckj> hahahahahaha
08:59 < fenn> that's what i meant
09:00 < cluckj> there is a cookie delivery service here
09:00 < fenn> "your blood sugar seems a little low, wouldn't you like to try a nice refreshing mountain dew?"
09:00 < kanzure> now you know what you must do
09:01 < cluckj> yessss
09:02 < cluckj> https://insomniacookies.com/
09:02 < fenn> cookies that never sleep
09:02 < kanzure> use the postmates api, http://blog.postmates.com/post/104856354257/powering-on-demand-logistics
09:02 < kanzure> docs https://postmates.com/developer
09:03 < kanzure> er i meant https://postmates.com/developer/docs
09:04 < cluckj> nice
09:05 < fenn> hexagons! and cubes!
09:05 < fenn> blue and white CSS!
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09:09 < fenn> "you can enter any store or address, specify an item and have it not only delivered but also purchased at the pick-up"
09:10 < fenn> we waited until 2015 to have a guy go down the street and buy a candy bar?
09:10 < fenn> surely this must have existed in the 1999 dot com bubble
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09:10 < kanzure> webvan
09:11 < fenn> .wik webvan
09:11 < yoleaux> "Webvan was an online "credit and delivery"[clarification needed] grocery business that went bankrupt in 2001. It was headquartered in Foster City, California, USA, in Silicon Valley." — http://en.wikipedia.org/wiki/Webvan
09:13  * fenn wonders what's at 20 mcallister street
09:13 < fenn> oh it's the fortress of failed economies
09:14 < fenn> .wik hibernia bank
09:14 < yoleaux> "Hibernia is the Classical Latin name for the island of Ireland." — http://en.wikipedia.org/wiki/Hibernia_Bank
09:15 < fenn> hm no that's 1 jones street
09:15 < fenn> maybe it has 2 addresses
09:15 < kanzure> "We thank C. Michael Atkin, Gray Rybka, and Samuel Thompson for early programming on the Animat and neural interface and MultiChannel Systems (http://www.multichannelsystems.com) for their gracious technical support; Sami Barghshoon and Sheri McKinney for help with cell culture. This research was supported by a grant from the National Institute of Neurological Disorders and Stroke, RO1 NS38628 (SMP) and by the Burroughs-Wellcome/Caltech ...
09:15 < kanzure> ... Computational Molecular Biology fund (DAW)."
09:23 < kanzure> also things weren't very mobile at the time
09:23 < kanzure> so people would have to go home to get new instructions
09:23 < kanzure> or develop a phone system for that
09:23 < kanzure> which may be too cumbersome for the delivery people to bother with
09:25 < fenn> it seems like mixing huge vats full of mineral oil and high powered electronics would be a big fire hazard
09:26 < fenn> didnt they have pagers? that's totally 90s
09:26 < fenn> surely someone could figure out how to send pages from a computer
09:28 < kanzure> you have such high expectations
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09:34 < kanzure> win 55
09:34 < kanzure> whoops
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09:51 < CaptHindsight> kanzure: what's the current state of the patents on the first gen DNA synthesizers?
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10:06 < kanzure> expired
10:11 < CaptHindsight> any idea how fast they are currently able to read base pairs? (referring to DNA a linear recording)
10:11 < kanzure> they don't read
10:11 < kanzure> those are dna sequencers
10:12 < kanzure> which also have lots of expired patents (especially around sanger sequencing, i think)
10:12 < kanzure> however, there's lots of recent fancypants dna sequencing technology that is much more efficient
10:12 < CaptHindsight> I know I'm talking about reading now vs printing/sequencing
10:12 < kanzure> i would pester ParahSailin about dna sequencing things, he seems to know various hiseq machines on the market at the moment
10:13 < ParahSailin> solexa sequencing has been around for about 8 years now
10:14 < CaptHindsight> feed DNA though an aluminum oxide pore, detect and record sequences as they pas through the end of the pore
10:15 < ParahSailin> is that how minion works?
10:15 < kanzure> are you asking a question
10:15 < kanzure> there are many nanopore sequencing methods
10:16 < CaptHindsight> should be able to read an entire length in minutes
10:17 < ParahSailin> this is your theory?
10:17 < CaptHindsight> I'm just taking a fresh look at reading and synthesizing
10:17 < kanzure> CaptHindsight: here's some stuff,
10:17 < kanzure> http://diyhpl.us/~bryan/papers2/bio/Cheap%20third-generation%20sequencing%20-%20nanopores%20-%20cyclodextrin%20-%20hemolysin%20-%202009.pdf
10:17 < CaptHindsight> someone made a single chip reader, I forget the bandwidth
10:17 < kanzure> http://diyhpl.us/~bryan/papers2/bio/Physical%20approaches%20to%20DNA%20sequencing%20and%20detection%20-%202007.pdf
10:17 < kanzure> http://diyhpl.us/~bryan/papers2/bio/Progress%20in%20sequencing%20DNA%20with%20an%20AFM.pdf
10:18 < kanzure> http://diyhpl.us/~bryan/papers2/bio/Rapid%20Sequencing%20of%20Individual%20DNA%20Molecules%20in%20Graphene%20Nanogaps%20-%202008.pdf
10:18 < kanzure> http://diyhpl.us/~bryan/papers2/bio/Rapid%20sequencing%20of%20individual%20DNA%20molecules%20in%20graphene%20nanogaps.pdf
10:18 < kanzure> http://diyhpl.us/~bryan/papers2/bio/Real-time%20DNA%20sequencing%20from%20single%20polymerase%20molecules.pdf
10:18 < kanzure> http://diyhpl.us/~bryan/papers2/bio/Single-molecule%20sequencing%20of%20an%20individual%20human%20genome.pdf
10:18 < kanzure> http://diyhpl.us/~bryan/papers2/bio/The%20potential%20and%20challenges%20of%20nanopore%20sequencing%20-%20Schloss.pdf
10:18 < kanzure> that's all i remember at the moment
10:18 < kanzure> oh also http://diyhpl.us/~bryan/papers2/bio/Nanopore%20Unzipping%20of%20Individual%20DNA%20Hairpin%20Molecules%20-%202004.pdf
10:19 < t12> nanopore has a bad rep
10:19 < t12> from 20 years of being promised the world
10:19 < ParahSailin> minion is actually available
10:19 < kanzure> you're thinking of nanotech
10:19 < kanzure> different subject
10:19 < t12> no, nanopore sequencing
10:19 < t12> oxfort et al
10:19 < t12> oxford
10:20 < t12> the most imperssive sequencing is prolly pac bio's single molecule
10:20 < t12> if you have a spare million dollars
10:20 < ParahSailin> you can actually buy minion...
10:20 < t12> buying a thing and a thing working for practical use
10:20 < t12> are very diffnt
10:20 < CaptHindsight> whats the problem with nanoopre by MinION?
10:20 < ParahSailin> it has error rate, but its a fine complementary sequencing tech
10:21 < kanzure> pacbio's stuff was from back in 2008 and ignores the other 6 years of sequencing
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10:22 < CaptHindsight> recall how high the error rate is and why?
10:22 < t12> capt: last review i read said essentially
10:22 < t12> beta testers genomes that they tried to push through it
10:22 < t12> couldn't successfully assemble
10:22 < ParahSailin> so we actually have one and have actually used it
10:22 < t12> my assumption is due to big messed up chunks it cant handle well
10:22 < kanzure> right now i'm like 100% sure that t12 is full of shit
10:22 < ParahSailin> pretty high indel rate
10:22 < t12> i know i'm going against hype religion with hating on nanopore sequencing here
10:23 < t12> and it may be the future
10:23 < t12> but it doesnt seem to be there yet
10:23 < kanzure> is your position that ParahSailin  is lying?
10:23 < kanzure> please be more specific
10:23 < ParahSailin> but if you are sequencing microsatellite stuff, its a decent complementary technology
10:23 < CaptHindsight> I'm wondering if the problem with MinION is just the wrong people making it
10:24 < ParahSailin> solexa will probably always be the best
10:24 < t12> i guess i'm saying that
10:24 < t12> try and replace a modern illumina sequencer with a nanopore sequencer
10:24 < kanzure> t12: and more speciifcally, you believe that he hasn't actually used minion?
10:24 < t12> and failure is likely
10:24 < t12> sequencer performance is very contexted on what your task is
10:24 < ParahSailin> i wouldnt use minion for general use
10:25 < t12> for some things some kinds of errors do/dont matter
10:25 < t12> for some things read length does/doesnt matter
10:26 < t12> for some things some kinds of sequences/samples preps do/dont work
10:26 < CaptHindsight> http://www.technologyreview.com/news/530746/radical-new-dna-sequencer-finally-gets-into-researchers-hands/
10:26 < kanzure> CaptHindsight: the first rule is never read the news
10:26 < CaptHindsight> a list of commercially available readers would be handy to review
10:27 < CaptHindsight> lest philosophy more science
10:27 < CaptHindsight> lest/less
10:27 < t12> theres also ion torrent
10:27 < t12> i think they're mainly fast
10:27 < kanzure> the second rule is "no philosophy"
10:27 < t12> but its kinda immensely complex
10:27 < ParahSailin> ion torrent is not that useful for anything
10:27 < t12> solids are on the way out
10:28 < ParahSailin> we just sold ours
10:28 < CaptHindsight> I want to see what these people are having trouble with and why they can't seem to  make them work
10:29 < t12> you can get solids pretty cheap
10:29 < kanzure> sequencing is a very competitive market right now. synthesis is where you should be applying your effort.
10:29 < t12> like banged up ones for <10k on ebay
10:29 < t12> getting it working, getting reagents
10:29 < t12> suffering through the prep
10:29 < t12> another story
10:29 < CaptHindsight> need both sides
10:29 < kanzure> sequencing works
10:29 < CaptHindsight> how long does it take?
10:29 < t12> sequencing?
10:30 < CaptHindsight> yes
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10:30 < t12> for illumina stuff
10:30 < ParahSailin> illumina's marketing material is accurate
10:30 < t12> 24hr-1week depending
10:30 < ParahSailin> wrt performance
10:30 < t12> oh model, run type, etc
10:30 < t12> read length
10:30 < CaptHindsight> I'm talking about reading an entire sequence in minutes
10:31 < t12> what does entire sequence mean
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10:31 < t12> generally you chop stuff up and read alot in parallel
10:31 < ParahSailin> if you want benchtop rimmediate results, maybe minion or iontorrent
10:31 < t12> then try and stitch the data back together
10:32 < CaptHindsight> 1.8 meters of DNA
10:32 < ParahSailin> but youd be surprised how infrequent that use case is
10:32 < kanzure> even if you are doing single-molecule sequencing, you still use lots of molecules in parallel
10:32 < ParahSailin> waiting for accurate illumina sequence in a day is never your time bottleneck
10:33 < t12> generally sample prep+data analysis
10:33 < t12> become limits pretty quick
10:33 < t12> unless you've really really got it dialed in
10:33 < t12> also just straight up failing runs
10:34 < t12> illumina will refund your chemistry costs if you get <50% spec i think it is
10:34 < t12> otherwise its acceptable loss for example
10:35 < CaptHindsight> most of the time these dev teams have the wrong people working on the tech
10:36 < t12> which dev teams
10:36 < CaptHindsight> I suspect that the case here again with the sequencers like minION
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10:37 < CaptHindsight> I'll take a look at it later
10:37 < CaptHindsight> thanks for all the links!
10:37 < t12> i'm sure the standard science world caveats apply to the reviews
10:37 < t12> ie: PI gets one, gives it to overworked postdoc says give me something i can write up about this
10:38 < t12> postdoc has no paper motive to put much effort into it, etc
10:38 < kanzure> postdoc is just going to pawn it off on gradstudentbot
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10:40 < delinquentme> heh
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10:42 < CaptHindsight> I was working with a group making synthetic DNA
10:42 < ParahSailin> idt?
10:42 < CaptHindsight> they can easily mass produce it in bulk
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10:43 < CaptHindsight> for ID and anti-counterfeit use
10:43 < kanzure> there's no reason to do single molecule dna synthesis
10:44 < CaptHindsight> I'd like to obsolete the tech and also in doing so have it available for biomed
10:44 < kanzure> if your solid support has ~1000 copies on it, it's really not problematic
10:45 < kanzure> but also, one method that people have used is cmos-based patterning of the initial components so that strands have a very specific spacing between each other, i think
10:49 < delinquentme> "solid support" ?
10:49 < kanzure> microbeads, larger beads, etc
10:49 < kanzure> solid phase synthesis
10:49 < kanzure> .wik solid-phase synthesis
10:49 < yoleaux> "In chemistry, solid-phase synthesis is a method in which molecules are bound on a bead and synthesized step-by-step in a reactant solution; compared with normal synthesis in a liquid state, it is easier to remove excess reactant or byproduct from the product. In this method, building blocks are protected at all reactive functional groups." — http://en.wikipedia.org/wiki/Solid-phase_synthesis
10:53 < kanzure> also i'm not sure i've heard of a reasonable single molecule dna synthesis proposal
10:53 < kanzure> there's some nanopore ideas that were floated around in the enzymatic dna synthesis group
10:53 < kanzure> https://groups.google.com/group/enzymaticsynthesis
10:54 < kanzure> so i suppose that would be single molecule...
10:58 < t12> capt: twist?
11:00 < kanzure> there's tunneling tips that have been used for chemistry http://www.physics.mcgill.ca/~peter/534A/rieder.pdf
11:02 < CaptHindsight> are there signs that people already have this all working quickly and they are just keeping it quiet or are they having trouble getting it working?
11:03 < kanzure> yes, the groups that are interested in throughput and timeliness just use highly parallel setups
11:03 < kanzure> e.g., million-pixel LCDs and microarrays
11:04 < t12> the synthesis is not so bad
11:05 < kanzure> even venter paid >$40M for a genome
11:05 < t12> its the purity vs length, throughput, etc issues
11:05 < ParahSailin> cambrian genomics probably has real progress
11:05 < kanzure> (well, $400k for the final synthesis...)
11:06 < kanzure> hm "Synthesis of 3d metallic single-molecule magnets"
11:06 < CaptHindsight> whats their turn around time to read and make copies?
11:06 < kanzure> dna copying takes like <5 minutes
11:07 < CaptHindsight> heh, that just gave me an idea
11:07 < kanzure> at least one of the known polymerases operates at 20,000 bp/sec
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11:08 < CaptHindsight> not sure what the error rate is for the nanopore
11:08 < ParahSailin> 15%
11:09 < CaptHindsight> wow, do they scan in parallel and average the results?
11:09 < ParahSailin> no
11:11 < t12> you can sorta eliminate errors in data analysis
11:11 < t12> if you have lots of repeated copies of something
11:12 < CaptHindsight> I guess you can with biological vs synthetic
11:13 < CaptHindsight> the whole point of the synthetic is to make it not compatible with anything in nature (well it you're acting responsibly)
11:13 < CaptHindsight> it/if
11:14 < CaptHindsight> it also tends to be much shorter stands
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11:54 < kanzure> "not compatible with anything in nature" ??
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12:27 < kanzure> "Science as a vocation" (1918) http://anthropos-lab.net/wp/wp-content/uploads/2011/12/Weber-Science-as-a-Vocation.pdf
12:36 < delinquentme> kanzure, keeping gunicorn running as application server post disconnect from server
12:36 < delinquentme> supervisor?
12:36 < delinquentme> something else? IE: " What handles instantiating the application server ?"
12:38 < kanzure> "disconnect"?
12:39 < kanzure> um, yes supervisor is fine here
12:39 < kanzure> also normal things like runit, systemd, sysvinit, whatever
12:39 < kanzure> supervisord is probably more your style (screw the standards!)
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12:44 < delinquentme> kanzure, perhaps theres not a good reason to use supervisor?
12:45 < delinquentme> i've just used it before ... where these ones you've mentioned, I've got no exp with
12:45 < kanzure> the others are often conventionally used to boot your computer
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14:29 < kanzure> "We just have developed an interactive substructure search engine that runs over the wikipedia data" http://www.cheminfo.org/wikipedia/
14:29 < kanzure> .title http://www.jcheminf.com/content/7/1/10/abstract
14:29 < yoleaux> Journal of Cheminformatics | Abstract | Wikipedia Chemical Structure Explorer: substructure and similarity searching of molecules from Wikipedia
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15:16 < maaku> .title http://www.implicitcad.org/
15:16 < yoleaux> ImplicitCad.org
15:17 < kanzure> maaku: use instead http://solvespace.com/index.pl
15:20 < nmz787> kanzure: why are you still recommending things other than BRLCAD?
15:22 < nmz787> maaku: implicitCAD isn't very good for getting really really nice models if they have high dynamic-range in my experience
15:22 < nmz787> (dynamic range of scale of features)
15:22 < kanzure> brlcad's implementation of nurbs stuff is based on opennurbs (which lacks tests... rhino keeps those private), and some custom stuff brlcad had to implement (which is nowhere near as cleanly implemented as in solvespace)
15:23 < nmz787> if it's nurbs, should the tests be the same pretty much, other than the APIs?
15:23 < nmz787> s/should/shouldn't/
15:24 < nmz787> and can you really trust one developer to implement things well versus a team of people at a company specifically focusing on CAD?
15:24 < kanzure> well what else are you going to test, minor variations in step output? that's not relevant
15:24 < kanzure> yes, a single person is 10000x more trustable
15:24 < nmz787> well NURBs is math
15:24 < nmz787> so shouldn't the tests all be math-based tests
15:25 < kanzure> you're welcome to try that, but i wouldn't be surprised if even very basic operations (like "create a sphere" or "intersect a box with a sphere") produce dramatically different results between libraries
15:26 < nmz787> well I haven't really done anything with NURBs since the math is still a bit beyond me
15:27 < kanzure> http://en.wikipedia.org/wiki/Non-uniform_rational_B-spline#General_form_of_a_NURBS_curve
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15:28 < nmz787> I need an animated cartoon video version of that
15:30 < nmz787> also, why don't these smart people who know NURBS contributing to something like BRLCAD which has tons of eyes looking at the code, and tons of file converters
15:30 < kanzure> http://upload.wikimedia.org/wikipedia/commons/3/3d/B%C3%A9zier_2_big.gif
15:30 < nmz787> why don't all these people work together instead of splintering and leaving half-useful code lying around
15:31 < nmz787> ah yeah that gif is a good one
15:31 < nmz787> this was a good one too http://geometrie.foretnik.net/files/NURBS-en.swf
15:35 < kanzure> realistically i think that this should not necessarily be internal to brlcad. there should be a separate nurbs kernel, and then brlcad should consume that library, and even develop on it; but it should not be a sublibrary of brlcad.
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15:35 < kanzure> there are lots of subtle and annoying reasons why people will tend to create new libraries, and most of the reasons are bad
15:36 < kanzure> unfortunately it is often easier to write something new than to read existing source code, because you might have to fix the existing source code in things that seem totally unrelated to what you are actually doing (this is just the nature of large software projects...)
15:36 < kanzure> *of poorly planned large software projects
15:38 < kanzure> i believe that technically the nurbs surface-surface intersection stuff in brlcad is working, although i don't know which edge cases it is presently failing on, or which ones they have surpassed. there was a gsoc writeup on their wiki explaining the state in 2012 and again in 2013.
15:43 < nmz787> yeah there was someone in the kicad chatroom mentioning some converter that BRLCAD already had, and reading their code was the only reason I remember them giving for not wanting to use that.
15:44 < kanzure> brlcad's converters are alright
15:45 < nmz787> friggin, I pay for BRLCAD with my taxes!
15:46  * nmz787 goes to demand things in #BRLCAD
15:47 < kanzure> i think they would be happy to integrate a library like solvespace if it was cleaned up a little bit (and if it had a more permissive license)
15:47 < kanzure> (iirc, they can't integrate gpl stuff)
15:48 < nmz787> even tax credits for patches would be pretty cool
15:56 < chris_99> http://www.renishaw.com/en/tonic-linear-encoders--10186 - down to 1nm resolution
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16:16 < kanzure> https://github.com/genworks/gendl
16:16 < kanzure> "Gendl allows for high-level declarative, object-oriented problem solving and application development, including but not limited to the ability to generate and manipulate 3D geometry. To solve a problem in Gendl, you formulate it using the define-object operator, which allows you to specify inputs, outputs (computed-slots), and child objects, which then gives the ability to generate a "tree" of objects, useful for decomposing complexity."
16:17 < kanzure> "has you describe parts and sub-assemblies as objects, and then generating geometry commands from the object graph."
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16:33 < delinquentme> http://www.implicitcad.org/
16:36 < kanzure> -_-
16:36 < kanzure> delinquentme: this can't possibly be the first you're learning about implicitcad
16:39 < kanzure> first mentioned in hplusroadmap logs back in 2011 (2011-10-01) and also at least nmz787, fenn and maybe even juri_ have squawked about using it...
16:39 < kanzure> but also, check http://gnusha.org/logs/2015-03-22.log
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16:39 < nmz787> what a troll
16:40 < kanzure> right?
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17:58 < justanotheruser> whoah implicitcad is cool
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18:04 < nmz787> it's easy to design stuff in, but wasn't usable quality-wise for me :(
18:05 < kanzure> hooray i helped a cadperson https://news.ycombinator.com/item?id=9248640
18:10 < nmz787> ugh, why aren't there some minions for me around here?
18:10 < nmz787> i mean people to hang out with and discuss things on whiteboards
18:11 < nmz787> light-emitting display screens are so last decade/century
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18:14 < cluckj> oh shit is reflecting ambient light back in?
18:15 < kanzure> nmz787: maybe recruit someone from diybio list to join the channel
18:20 < kanzure> nmz787: did you ever meet lichen?
18:20 < nmz787> i didn't
18:20 < nmz787> we chatted briefly though
18:20 < kanzure> what about that tyler gilleries person
18:21 < nmz787> erhmmm
18:21 < nmz787> who?
18:21 < kanzure> i dunno, some person
18:21 < kanzure> i don't have any data
18:32 < nmz787> are pair-programming and peer-programming different things?
18:32 < nmz787> (which are presumably both different than pear-programming)
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18:38 < kanzure> pair programming is where two programmers fight for control over a keyboard
18:39 < kanzure> and when they get infuriated with one another for solving problems in different orders
18:41 < nmz787> but when it's >2 programmers, then it's peer-programming?
18:41 < kanzure> n oidea
18:41 < kanzure> *no idea
18:41 < kanzure> also: someone is interested in making us an hplusroadmap electronic/progressive track/mix
18:42 < kanzure> e.g., we can pick some samples/quotes from youtube videos
18:42 < kanzure> i'm thinking we should pick quotes from talks by aubrey de grey, anders sandberg, carl sagan (when he's not being totally retarded), ralph merkle, etc.
18:44 < cluckj> lol
18:44 < nmz787> hmm, $500 but a far drive... I think something like this would be like $500 to get shipped http://www.ebay.com/itm/Amray-1200C-Scanning-Electron-Microscope-SEM-/191542207330?_trksid=p2054897.l4275
18:44 < kanzure> .title https://www.youtube.com/watch?v=l9uWyR_2j8U
18:44 < yoleaux> Ralph Merkle - The Contributions of Robert Freitas to Molecular Nanotechnology - YouTube
18:44 < kanzure> so many good quotes
18:49 < kanzure> .title https://www.youtube.com/watch?v=FJJvzTsIITY
18:49 < yoleaux> Part 3: Ralph Merkle on the State of the Art of Cryopreservation - YouTube
19:02 < kanzure> .title https://www.youtube.com/watch?v=XfTqXL0d9Ls&t=14s
19:02 < yoleaux> Quest for immortality - YouTube
19:02 < kanzure> excellent quotes
19:02 < kanzure> ooh i should get some jojack quotes
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19:07 < cluckj> yes, do it
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19:15 < kanzure> hmm
19:17 < kanzure> yesssss https://www.youtube.com/watch?v=XfTqXL0d9Ls&t=1m58s
19:28 < kanzure> and this george church quote https://www.youtube.com/watch?v=Q_zzFRjeGRI&t=2m10s
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19:33 < kanzure> lrp5/bruce willis quote https://www.youtube.com/watch?v=Q_zzFRjeGRI&t=7m2s
20:18 < kanzure> "After ImplicitCAD, I worked with Rob Gilson on a SVG/WebGL constraint-based modelling tool, mech.ly. We got some neat stuff working, but never got to a point where we wanted to release things. I'm pretty persuaded this is the right direction to go."
20:19 < kanzure> (dead domain)
20:19 < kanzure> "I abandoned ImplicitCAD to write a constraint-based CAD program with my friend Rob Gilson. (I handled constraint solving with gradient descent, which worked surprisingly well, and a dab of grobner bases here and there.) We got some neat stuff working, but eventually got pulled away to other projects."
20:30 < kanzure> you guys are boring
20:34 < kanzure> is that SEM working
20:34 < kanzure> hm
20:34 < kanzure> "maybe"
20:37 < kanzure> sketchtastic: "I am selling an Amray 1200C SEM (Scanning Electron Microscope), I bought it not to long ago from a guy who said it worked, it does turn on but I can't seem to get a image to appear"
20:37 < kanzure> "I accidentally got some cheetos stuck in one of the vacuum tube, and I think the capacitors have turned to sand. But other than that, yeah it works."
20:41 < nmz787> i didn't look up the specs on it to see if it would be very nice or not
20:45 < nmz787> this looks like a good deal, says its working, but it's in Massachusetts http://www.ebay.com/itm/FEI-611-FIB-Focused-Ion-Beam-system-/261815650373?pt=LH_DefaultDomain_0&hash=item3cf56dc845
20:45 < nmz787> don't see any dual-beams on ebay
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20:50 < nmz787> "The SEMs have too many options. The little Vega3-SBH starts at under $100k and the Lyra 3 with 1 GIS and liftout is about $630k but can be dolled up to $1.5m or so without too much trouble."
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20:53 < nmz787> http://diyhpl.us/~nmz787/pdf/TESCAN_VEGA3_SB.pdf
20:56 < nmz787> diyhpl.us/~nmz787/pdf/LYRA_GM.pdf
20:56 < CaptHindisght> http://www.ebay.com/itm/AMRAY-SCANNING-ELECTRON-MICROSCOPE-MODEL-1830D-/310478306270  $6k
21:00 < nmz787> interestingly my school has one of these https://wiki.rit.edu/display/smfl/Amray+1830+SEM
21:00 < nmz787> and the manuals there
21:00 < nmz787> http://www.smfl.rit.edu/pdf/manual/Manual_Amray_1830_SEM_2.pdf
21:00 < nmz787> 'a manual'
21:01 < nmz787> precursor to autofocus algorithms "Press Wobbler to check the alignment of the final aperture. A properly aligned aperture will produce an image that pulses in and out of focus when the Wobbler is engaged. If the image shifts up and down or left and right, the final aperture needs alignment"
21:02 < t12> ems are quite a bit of trouble to service/maintain
21:02 < t12> i guess sems are somewhat easier than tems
21:02 < nmz787> yeah no one in the DIY community outside the xray folks and maybe tesla-coil folks do much with High VOltage
21:03 < nmz787> maybe neon lighting folks
21:04 < nmz787> http://www.hssemgroup.com/high-school-sems
21:05 < nmz787> .title
21:05 < yoleaux> High School SEMs - HS_SEM (High Schools with Scanning Electron Microscopes)
21:05 < t12> also cost quite a bit of money to keep on
21:05 < nmz787> huh, no wonder bergen county has one (geohot went there)
21:06 < nmz787> that Vega3 runs off a 15A 110
21:06 < nmz787> 100V
21:06 < nmz787> 110V
21:06 < t12> thats still like 1k/mo
21:06 < t12> at baseline residential
21:06 < nmz787> $126 bux a month around here
21:07 < nmz787> .11 per kWh * (110V * 15A / 1000V per kV) * 24 hours * 30 days
21:07 < nmz787> .11*1.6*24*30 == 126.72
21:08 < nmz787> err 130.68
21:09 < t12> ahh yeah sorry
21:09 < t12> i always fail at arith
21:11 < kanzure> "optimist prime"
21:29 < kanzure> "I like both the Suffused and Blake Baltimore collections. Both have parts that are excellent for productive work. I also originally thought about mixing in Aubrey, Craig Venter, myself and Peter Diamandis into Aging is a terminal disease track, but it turned out to be too distracting and gave negative impression, so I decided to minimize the distraction and add a female voice with a simple phrase and then playing with the amplitude and ...
21:29 < kanzure> ... wavelengths to go through the various "phases" of life. However, when you are sponsoring a track, you can set any specifications. A track may cost your anywhere from $10 to $10,000 depending on the quality and fame of the DJ and whether you are looking to integrate existing work or produce it de-novo.  [....] He wold charge about 2,000 euro for three weeks of work on a track and would work through an agent. Let me know if you would ...
21:29 < kanzure> ... like me to connect you. For your project I can chip in as well if you like. There are many DJs, who would be willing to work on contract. But the quality is very important, so it is best to sample a few. Here I can also contribute. Personally, or even through Insilico."
21:36 < nmz787> paperbot: http://link.springer.com/article/10.1007%2Fs00300-004-0612-6
21:36 < paperbot> http://diyhpl.us/~bryan/papers2/paperbot/New%20record%20of%20moss%20and%20thermophilic%20bacteria%20species%20and%20physico-chemical%20properties%20of%20geothermal%20soils%20on%20the%20northwest%20slope%20of%20Mt.%20Melbourne%20%28Antarctica%29.pdf
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--- Log closed Mon Mar 23 00:00:30 2015