And that "ragamuffin" just happens to be carrying a 751 key, because he knows that all compartments are locked with them? :)
The S&B's front door is very much like the 751 compartment locks: it keeps the honest person honest. Why mess with a front door when you can tap on the glass and have a window open in a flash? But a locked front door will keep out the casual passer-by who just tries the front door on impulse, and will walk in if it's unlocked. He's not going to break-and-enter, but he might just do it if the door is open or unlocked.
"And that's all I'm gonna say about that." :)
