Experimental evidence for very long term processes

[Giltil (Gilbert Thill)]

@sfmatheson

@Giltil

But what are the experimental evidence for the idea that selection can drive complex adaptation?

Lots of answers can work here but first I’m curious about the experimental evidence for the idea that erosion can drive complex canyon formation .

Equating the erosion process driving canyon formation with the selection process putatively driving complex adaptations is like comparing apples and oranges.