# Key Points from IRC Log

• Discussion of energy requirements for mechanosynthetic replicators, with genehacker noting they require approximately 20,000 KWh/kg, which is extremely energy intensive compared to injection molding (3 KWh/kg) and RepRap (6-20 KWh/kg).

• Comparison of manufacturing energy costs across technologies, with participants noting that DRAM manufacturing requires about 23 KWh/kg, suggesting that proposed molecular assemblers may need redesigning to be less energy intensive.

• Several open source hardware resources were shared, including links to definitions (http://freedomdefined.org/OSHW) and presentations (http://www.slideshare.net/adafruit/open-source-hardware-and-the-web).

• Discussion of a potential "bluetooth tooth" implant that could serve for chemical analysis while eating, tracking mouth microorganisms, or monitoring pH levels over time.

• Mention of scientific equipment needs for nanomaterials research, including a gradient magnetometer requiring water-cooled electromagnets, DC power supplies capable of 50A current sweeps, and other components costing approximately $10-12K.

• Reference to an article in the New York Times about self-measurement/quantified self featuring one of the channel participants (http://www.nytimes.com/2010/05/02/magazine/02self-measurement-t.html).