# once yes, twice maybe, thrice no [closed]

When it occurs once, it is __.

When it occurs twice, it probably is __.

When it occurs thrice, it is not __.

What is it?

Not a puzzle. Just a simple one.

• I don't think this is a good question (since the answer is pretty much obvious, at least to me), but I also don't think it's primarily opinion-based, precisely because it has a single obvious solution ("mistake", as suggested by manshu, doesn't really work IMO). Voting to reopen. Sep 3, 2016 at 1:01
• There's a single obvious solution, but it isn't really a very satisfactory solution: plenty of things could occur 3x and still be _____, and not everything that occurs only once is ______. And (especially in view of the "... three times is enemy action" quotation) it's a bit too straightforward: here are some well known properties of X, now find X. I didn't VTC but I don't think I'll VTR either. Sep 3, 2016 at 19:04

Perhaps nikamed is thinking of

chance

or

coincidence

or something of the kind? (I don't find either a super-convincing answer, I have to say, but somehow the question gives the impression that there may not be a super-convincing answer...)

• Here it is. Thanks for saving me from too broads. The coincidence was what I was thinking. Sep 2, 2016 at 16:23
• Good answer (+1), but I'd like to point out that things can happen by coincidence 3 times, and something that happens once isn't necessarily chance, so the question doesn't really work Sep 2, 2016 at 16:25
• That's why I don't find it super-convincing :-). Sep 2, 2016 at 16:33
• Goldfinger: "Once is happenstance, twice is coincidence, three times is enemy action." Sep 2, 2016 at 16:57
• @DanRussell Yes!! That was the one which I was trying to remember...
– Sid
Sep 2, 2016 at 17:35

Mistake

Because

Mistakes can happen once or twice but not every time.

• Not the answer I thought but +1 Sep 2, 2016 at 16:16