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Aug 13, 2025 at 19:43 comment added Richard Kirk @Escapeddentalpatient. It may be possible to speed things up a bit of the Von Neumann machine could make lots of other copies of itself, so what it does would be more like farming. It might be possible to make artificial life that fixed carbon from atmospheric carbon dioxide much faster than the plants of the carboniferous, or anything that evolved to fill a niche. If the story required it, we could probably remove an order of magnitude.
Aug 13, 2025 at 18:06 comment added Escaped dental patient. Didn't know about the Azolla event. Turns out it's a sort of fern. Totally agree about timescale being unrealistic.
Aug 13, 2025 at 12:08 history answered Richard Kirk CC BY-SA 4.0