It’s still antagonistic because sheet music is not ‘a problem’ for guitarists.
I never said it's a problem. I asked what's the problem that "You can’t quite run it on [...] say, a guitar."
You specifically refer to guitarists’ problem with notation, not the mathematical non-uniqueness. You ask you want to know why “musical notation is a problem for guitarists.”
It’s not.
Am I missing something, or are you directly contradicting your original comment?
If you actually read my comment (try it!) you will see that I make a statement about sheet music not uniquely specifying where on a guitar a specific note is to be played. I make no statement whatsoever about guitarists.
You seem to have trouble with the concept that the vast majority of instruments does not yield a recognizable melody simply by pressing the right button at the right time. All of those musicians are doing just fine, thank you very much.
I know it's not really suited for e.g. non-western or modern quarter-tone music. But since I don't play the guitar I would like to understand the reasoning behind your qoute:
> You can’t quite run it on different hardware: unlike on a piano, the note does not uniquely determine how something is played on, say, a guitar.
Is that more clear?