Quote:
Originally Posted by
Kaos.Doodles 
Now that they had a list of places, Scabior was no longer distracted. He felt alert and ready to teach. "So as we agreed to before, passwords are used to restrict people and limit access. Why would places like Common Rooms and the Prefects bathroom or any of the other places listed need to have limited access to get in?"
Well, they'd already discussed how passwords restricted people and limited access, so Sierra tried to think of something else to bring to the table. She raised her hand slowly at first, and then she raised it at a normal pace and to full height as a thought came to mind.
"...because the people inside don't want the others to find out what they're up to," she said.
"Usually if you're trying to restrict access, you're planning something or working hard for something that you don't want the others to know about. You're worried that they'll get in on all your good ideas and use that as a chance to one-up you."