dhw: [i]I’d be interested to know if Tony thinks his God controls the environment, and if he specially created root types in advance of or in response to environmental change[/i].

DAVID: [i]If by environmental change you mean entering water, that is different than climate change or Chixculub.[/i]

dhw: Of course it’s different. There are all kinds of environmental changes, global and local, and in my view they could have created the need or the opportunity for organismal change.

I know you recognize that need and opportunity are not the cause of speciation, but perhaps allowing the process to try.