An Etiquette Question

Sigh . . . Olympic knitting is taking up all too much of my time, and it looks like I sadly still won't be done when that final flame is extinguished.

However, I have, due to this challenge of mythic (and Olympic) proportions, started knitting in the oddest times and places. To wit: Is it ever OK to knit at Symphony Hall, during a concert? Even if the program is nothing but Schoenberg? Even if the hall is half empty and everyone else around me is asleep?

Forgive me, James Levine.