I have just watched "Tapestry" episode of Star Trek The Next Generation (6x15) and I have no clue, why such title was chosen for this episode? Can someone shed some light on this?
It is a reference to greek mythology. The history and fate of humans was represented as a tapestry woven by the gods, with different threads representing different events/people.
Q offers to Picard to change his past (his tapestry). That is where the name comes from.
Quoting from the episode:
There are many parts of my youth that I'm not proud of. There were... loose threads - untidy parts of me that I would like to remove. But when I... pulled on one of those threads - it unraveled the tapestry of my life.