The Challenge of Self-Replication

In my last post, Mitchell Porter (whose mailing list postings I’ve been reading for nearly a decade), argues that my vision for a Neo-Carboniferous world is “deliberately low-key”, and he paraphrases it as, “Hey, greens! You shouldn’t fear us robot-swarm, mind-uploading, planet dismantling transhumanists! Look at this vision of a leafy green Carboniferous world that we’ve conjured up for you!” Then he remarks, “It says nothing about, say, how we meet the WMD-fabber-on-every-desktop problem without outright relinquishment, nor does it really tackle the problem of whether having as many trees and human beings as possible truly seems like a good thing, when you have truly godlike power and insight”.

Mitchell’s comment, and Sebastian Hagen’s before his, are on the mark. By transhumanist standards, the vision I present is boring and conservative. My point is to attempt to flesh out the wide range of possibilities inherent when intelligence commands self-replicating machinery. For myself, I’d appreciate a Neo-Carboniferous Earth just as easily as if it were a computer simulation on a matchbox-sized nanotechnological computer, as if it actually existed in the “real …

Read More

The Available Matter and Energy

Part of the rationale for being a “transhumanist”, or, more broadly, having grandiose dreams for humanity’s future, is the extremely simple and mundane observation that the available matter and free energy in our general vicinity is far larger than what we have utilized of it thus far. The incoming solar energy is about a million times greater than global energy consumption, and the available hydrothermal energy to be extracted from the energy gradient between the mantle and the upper crust is many times that. These energy sources far exceed that available from all fossil fuels, uranium, and thorium combined. In the long run (less than a century?), solar and hydrothermal will become our primary energy sources, simply because nothing else will be able to meet our exponentially growing demand.

The biosphere contains just two trillion tonnes of carbon, but the oceans contain about 36 trillion tonnes of carbon (mostly as bicarbonate ion), and several trillion tonnes of additional carbon exist as fossil matter, including the leftovers from the catastrophic Azolla event 49 million years ago. Retrieving oceanic carbon and reintroducing …

Read More