According to Freitas, gray goo replication speed is limited by the energy and heat dissipation. He estimates ecophagy would take 20 months to run to completion while raising the Earth's temperature by 4 C. Faster systems would run hotter. https://www.rfreitas.com/Nano/Ecophagy.htm
Atoms stick together. It takes around 10^-19 J to pull apart a covalent or metallic bond, whether in living cells or nanobots. The biosphere has about 10^41 carbon atoms that cycle between plants and CO2 every 5 years. That represents 300 TW of carbohydrate production, out of the 90,000 TW of sunlight available at the Earth's surface. Solar cells are already 20-30% efficient, enabling nanotechnology to out complete DNA based life, not even considering other energy sources. But according to Moore's law, this technology is about a century away, assuming global computing power doubles every 2-3 years. There are on the order of 10^37 bits of DNA and 10^39 amino acids in the biosphere, with replication and transcription rates of 10^29 and 10^31 per second respectively. The smallest and fastest possible nanobots would be the size and speed of bacteria, doubling every 15-20 minutes given available nutrients. Human embryo cells with much larger DNA take 10 hours to divide. Adult cells divide on a scale of months or years. On Mon, Mar 11, 2024, 9:13 PM Keyvan M. Sadeghi <keyvan.m.sade...@gmail.com> wrote: > > On Mon, Mar 11, 2024, 7:49 PM <immortal.discover...@gmail.com> wrote: > >> Doesn't need to eat the core of Earth to be grey goo takeover. Nor use >> ALL energy or matter. >> >> Thoughts? >> > > First iteration could be: transform(human) = cyborg > >> *Artificial General Intelligence List <https://agi.topicbox.com/latest>* > / AGI / see discussions <https://agi.topicbox.com/groups/agi> + > participants <https://agi.topicbox.com/groups/agi/members> + > delivery options <https://agi.topicbox.com/groups/agi/subscription> > Permalink > <https://agi.topicbox.com/groups/agi/T9f5825d9ca7f533b-Md6dcb11c6228f645c028f437> > ------------------------------------------ Artificial General Intelligence List: AGI Permalink: https://agi.topicbox.com/groups/agi/T9f5825d9ca7f533b-Mee6ebcc07d0267f1c86a7929 Delivery options: https://agi.topicbox.com/groups/agi/subscription
