Submit your Bay Area finds to found [at] sfist [dot] com or tag them sfist and found on Flickr! Let us know where and when you found the item and any other helpful info. This deep philosophical exchange on a bathroom stall door at Crissy Field appears to be between three or four different people. It was captured by SFist reader Cassie, who was nice enough to transcribe it for us. (It's a little bit......