At the mention of mistakes and situations, the youngest Winchester gave Wesley a look that he cut off with a turn of his chin. It was a look that could be read very clearly: a dull, thoughtful look. It said that Sam knew exactly the kind of mistake Welsey meant. He didn't answer, however, so nothing that meant the exact circumstances must have occurred here in The City.
After an appreciative sip of the coffee, Sam found a free seat and took it. Sam did research and thinking in one place, usually sitting. He was methodical and careful about nearly everything, especially when it involved a case. (Assuming, of course, that case didn't involve his family.) "If we are operating on these conclusions--that The City is conscious, that It has no specific purpose, and that it can bend space and time--then it doesn't matter what we want. You can't fight something like that. You can't kill it, either. That's like fighting God."