Authors:

I think it would be self-indulgent to go, "Oh, I'm going to make this character different by giving him a quirk of some kind." I don't think that serves the story, particularly. But even very similar scenes with a different set of actors, a different set of circumstances, it starts to evolve as a different character.

"A Crime Drama Crosses The Atlantic And Detective David Tennant Is On The Case". "All Things Considered" with Robert Siegel, www.npr.org. November 11, 2014.
I think it would be self-indulgent to go, Oh, I'm going to make this character different by giving him a quirk of some kind. I don't think that serves the story, particularly. But even very similar scenes with a