dhw: Unfortunately, we have no record of precisely how big individual foetuses and canals were year by year, but I do not see how logic dictates that a sourceless, unknown and unknowable mind either dabbled or preprogrammed sudden expansions of foetuses and canals plus the billions of other innovations, lifestyles and natural wonders throughout the history of life

DAVID: Yet you admit design is required.

Yes. Must I repeat that my hypothesis is that the design is done by the cell communities using their possibly God-given intelligence to respond to new needs?

dhw: [...] As for cells, must I really keep repeating that (a) my proposal is that evolution does NOT advance through fortune-telling but through RESPONSES to present conditions, and (b) that there is no proof for any of the hypotheses, but I regard my own hypothesis as considerably more logical than yours (bearing in mind that I do not reject the possibility that there is a God who designed the mechanism).

DAVID: Yes, back to design is required, and the only evidence we currently have is simply that only minds design.

Which does not mean that there is a single, sourceless, unknown, unknowable mind that did the designing. Maybe cells have the equivalent of what we call “mind”. (See also under “Genome complexity”)