@lydiaconwell @steter "too many things at the same time" is a good thought! In a way, multi-tasking on a computer is a mirage. It's just running multiple programs in tiny steps, one at a time. When the computer comes around to continue with a task it interrupted a millisecond ago it expects memory and variables to be "as it left it". If that is not true it might wait for a thing to happen that is now be impossible and never complete its task. That might look like the program froze.