Thanks for your post.
"Evolution" involves not only "history", but present and future as well. In my post, the present and future are where the questions were raised, not the clearly documented history.
In a nutshell, just because a house didn't have any cracks in it's foundation last year (history) doesn't mean I shouldn't check for dveloping ones this year (present) before they deepen and cause problems next year (future).
I hope I haven't misinterpreted your meaning.