Ok. I'll give an example of nonlinear time.
   We use it all of the time.
   Civilizations.
   It follows a pattern of the birth/life/death cycle, rather than
   dots on a very long line.

   It's not that we CAN'T place civilizations or lives on a
   singular line stretching all the way back and all the way
   forward with today as a dot...

   but it missing a lot of information that way.