Inception2010

Cobb:
You've got the basic layout. Bookstore, cafe. Almost everything else is here too.

Ariadne:
Who are the people?

Cobb:
Projections of my subconscious

Ariadne:
Yours?

Cobb:
Yes. Remember, you are the dreamer. You build this world. I am the subject. My mind populates it. You can literally talk to my subconscious. That's one of the ways we extract information from the subject.

Ariadne:
How else do you do it?

Cobb:
By creating something secure, like a bank vault or a jail. The mind automatically fills it with information it's trying to protect. You understand?

Ariadne:
Then you break in and steal it?

Cobb:
Well....