# Key Points from #hplusroadmap IRC Log

• A participant invented a differential voltage-controlled current source circuit only to discover it had been patented since 2009, highlighting the challenges independent developers face in electronics innovation.

• Security concerns about Tor onion addresses were discussed, with Facebook developers demonstrating name collisions for shortened public keys, suggesting a need for implementing better security proposals from Tor specification documents.

• The discussion addressed cryptosystem review practices, proposing more documented evidence with reviewer signatures, while noting the difficulty of incentivizing thorough reviews beyond reputation benefits.

• Participants shared bioinformatics resources, including a mass spectrometry tutorial for computer scientists and a visualization of bacterial evolution on a "mega-plate" Petri dish.

• Technical methods for converting SVG files to G-code for CNC machines were explored, including a workflow using Inkscape and pstoedit.

• The Lightning Network was discussed as a solution for handling sub-satoshi Bitcoin amounts, which aren't supported in the main Bitcoin protocol.

• The Sia blockchain-based storage system was explained as using "algorithmic escrow" where hosts must put up collateral they lose if they fail storage proofs, creating economic incentives for reliable storage.

• A Bayesian model of perception was shared, describing perception as a "handshake" between top-down and bottom-up processing mediated by glutamate receptors, with dopamine coding for prediction error.