You know you're going down the rabbit hole when you're reading from sites that look like they're from the '90s =P

But it's awesome that I was the cause of digging deeper, I found this super difficult to explain what I feel is a fairly simple idea, but in terms anyone can understand without any knowledge of music at all. I guess its always a challenge to communicate a profession in a way a child can understand... Need practice!

(Not that you know nothing, but just generally for everyone)

As for uncertainty, well, it's actually technically impossible for these frequencies to match perfectly as I imply above, for reasons of physics I'll get to in a much later post, but that whole area is pretty fascinating