The problem with the "plenty of space down there" remark is that practical computers have to have their input states programmable, ie., there must exist some causal deterministic process to set the state of the input.
It's not clear that organic solutions at that level can do programmable computational work, nor that their work is at all deterministic.
At best, it would seem the organic direction for computing will be about building robots rather than CPUs.
It's not clear that organic solutions at that level can do programmable computational work, nor that their work is at all deterministic.
At best, it would seem the organic direction for computing will be about building robots rather than CPUs.