Related (and since you qualify the answers as "definitely yes" or "definitely no" I don't think it subtracts from what you say, but rather just adds to it:
> When a distinguished but elderly scientist states that something is possible, he is almost certainly right. When he states that something is impossible, he is very probably wrong.
(Clarkes first law, copied from https://en.wikipedia.org/wiki/Clarke%27s_three_laws)