Rapid eye movement may indicate neural activity, but dreaming for me implies a conscious awareness of the dream state, which I consider as unlikely in spiders.
An intelligent design paradigm can easily accommodate convergences as a natural consequence of a designer reusing the same ideas in different constructions.
The miracle of mimicry, for which there are countless examples in the animal kingdom, represents powerful evidence for design in nature.
Gregory Retallack is a kind of maverick paleontologist, who endorses a fringe hypothesis that Ediacaran organisms were not marine but terrestrial lichens.
Only the infusion of new information from outside the system can explain these bursts of biological creativity.