They are, <i>sometimes</i>.<p>Other times they&#x27;re strung out and looking for a fix.  A bike takes 5 minutes to steal and they know where they can pawn it for crack.<p>You can&#x27;t assume you&#x27;re dealing with rational agents.  When you&#x27;re actively looking for bike thieves, you&#x27;re going to run into an irrational one fairly often.