>>... but that all is probably far more than you thought you really wanted to know... :-P

I knew it was dangerous to try and post something partial, but simple, perhaps I should try and get the post removed.

When I see an apple drop from a tree I know what it will do. Newton may have only given a partial explanation but it's still good enough to give me an idea where the apple will end up. Whether superstrings exist or whther there is a unifying theory of everything with laws that exist both inside and outside singularities of space and time, or how the apple would behave in other coexisting multi-dimensional worlds is probably a distraction from me achieving my initial goal of retrieving the apple. Quite happy to debate that elsewhere (this is a good place for that sort of stuff I wonder whether my guitar would work there?)

I was only trying to explain something that seems very easy to me (to the level that I understand it which doesn't need to take in the limitations of tempered and non tempered instruments) in terms that someone who (apparently) does not find it immediately obvious will hopefully understand.