(September 19, 2011 at 3:22 pm)downbeatplumb Wrote:(September 19, 2011 at 3:14 pm)Carnavon Wrote: I suppose one could ask where does this behaviour come from?
It evolved, just like every other useful trait.
I am no expert on animal bedhaviour so I would really be stupid to argue on this. The alternative to "evolve" would be that it has been "programmed. I think some of the old behaviourists called it "instinct". Is it not a possible alternative - whether you agree with it or not?