Did We Have "Reptilian" Ancestors?

[Timothy_Horton]

@Greg

Studies by Behe and others are finding that mutations dont normally help an organism which long term dont lead to evolution to complexity, but a downturn towards extinction. And the micro evolution we do see such as in galapagos finches is simply traits inbuilt into the birds design selected to suit its environment. This adaptation causes the loss of genetic capability for further future survival. Take these two dynamics and one cannot make any sense that these are relateable to the macro version you might subscribe to where a lot of micro evolution is the macro version for the development of new body plans and irreducibly complex bio machines…

You dodged the question again Gerg:

What prevents micro level changes from accumulating over time into macro level change?