one stupid question though and we'll drop the subject - what are the thumbs used for?
Space bar.

...no "z".....??
ROFLMBO.... you noticed. lol. @P.I too .... you missed 'z'.
...no "z".....??
I hunted and pecked for years. About twenty years ago, I took a typing class at the local junior college. It didn't take long to dawn on me, I could have learned on my at home. One typing book and a good computer program is all that is really needed.
Night Tib !!!
(PI has 2 z's)

Night Tib !!!
(PI has 2 z's)