Today, mere hours before I am to get on an international flight, the trackpad on my MacBook suddenly has gone all haywire.
With care and patience I can get it to move to where I want (if you are reading this, then I will have scored a small victory in that direction), but it takes quite a while, and the cursor will often leap of its own accord to random places on the screen.
It occurs to me that this frustrating situation, and the immense frustration I feel in response, is a sort of electronic analog of physical dysfunction, a kind of technologically enabled Tourettes or Parkinsons.
The difference of course is that I can choose to walk away from my computer, or use another computer entirely.
In my experience, capacitive touch surfaces/screens like the apple trackpad spaz out because of water sitting on them, usually sweat… try cleaning it thoroughly.