Well, perhaps I'm just slow-witted or dull-minded, js1138. But nowhere do I recall you ever giving a definition of "supernatural intervention."
Exactly what do those words mean to you?
They don't mean anything specific to me, which is why I don't give the possibility much thought.
What I see on these threads is the claim that some phenomenon in biology cannot be the result of natural causes. The alternative is never specified, so I have little interest in pursuing the claim.