I’m not arguing with you either. Esh asked for an explanation of quantum computing to a 6 years old so I did some oversimplification, so my sentences might lost some context (english is not my main language you know).

When I said “at the same time” I meant at the same instance. If we can measure the spin of an electron (for instance), we would observe +1/2 or -1/2, no other way around. But when we’re not observing the spin, you cannot know which probability is happening.

I hope I could explain what I mean.