Why don't you tell me, my dear, dear John Paul, what you would accept as confirming evidence for common descent and the ToE?
You ask for evidence.
It is supplied to you, often complete with full bibliographic citations to the actual experiments.
You eiter do not respond at all, change the topic of discussion, produce something brilliant like "That doesn't happen." or say something like "Oh yeah, well why don't trees evolve into anything else but trees?",
as if that is some kind of valid criticism of the ToE, which it isn't.
So, please, tell us what would qualify as positive evidence for you.
Remember, you must
stay within the Theory of Evolution, unless you have positive evidence for this as-of-yet unseen "Scientific Theory of Creation, or Scientific Theory of ID.
Lack of evidence for the ToE doesn
NOT constitute positive evoidence for any other theory or notion, including Creation "science".