Evolution: a different view (Introduction)

by dhw, Friday, May 22, 2015, 08:27 (3473 days ago) @ David Turell

DAVID (2 May at 21.40): Exaptations appear thousands to hundred of thousands of years before any use is found for them. That is the key issue in the idea of pre-planning. 
And: “Please re-read in my book pages 130-131 for further discussion. The larynx and other changes are right on point.”-Dhw: You now accept that the changes must have been used for a more “primitive” language. That means they were used. And so it's goodbye to a key issue in the idea of pre-planning.-DAVID: We have a very subtle and complex form of speech for which all those changes were prearranged. Definitely pre-planning for what came after the earliest attempts at speech that used the voice mechanisms as they developed.-Please reread your post of 2 May, as above. Your point both there and in your first book was that the changes were NOT used, and that was your evidence of pre-planning. You now agree that they WERE used, and so you have lost your “evidence” that they were pre-planned and prearranged. Of course you are free to reiterate your belief as emphatically as you possibly can (“definitely pre-planning”), but such emphasis does not hide the fact that by your own admission you have lost “the key issue”.