BBCW, hence my disclaimer on being able to make a fist. OK, I should also have added a disclaimer on being able to open the fist up too!

For any instrument, there is an implicit assumption that you've got the basic physical abilities common to all people in reasonable health. If you haven't for whatever reason (through illness such as tendonitis or arthritis, or through permanent disability) then of course you wouldn't be able to play an instrument which requires physical capabilities that you don't have.

This doesn't change the fact that the guitar is a very easy instrument to learn for anyone who does have those basic physical abilities. I doubt you'd say that hoisting a pint is hard, just because a double amputee clearly wouldn't be able to manage it. ;-)

Graham.