Convergence; another example (Introduction)

by David Turell , Saturday, May 24, 2014, 20:34 (3836 days ago) @ dhw


> dhw: As always, I'd like to thank you for the flow of information. You are providing us with an on-going education! So I hope you won't think I'm ungrateful if I use your material to pursue certain arguments.-Use it any way you wish.
> 
>dhw: I agree that this an example of convergence. It also seems to me to be an example of evolution "spraying inventions in every direction" (your own expression) in an evolutionary free-for-all, rather than of "antedating need" and "pre-planning" (again your own expressions). See under "Innovation and Speciation: pre-planning".-The way evolution has proceded is by invention, trial and error. But still the amazing fact is we arrived, against all need for seomthing so complex to survive in the Earth's climate and challenges. Still smells of purpose to me.