No idea is simple when you have to plant it in someone else's mind.
Read more Cobb QuotesFrom: Inception (2010)
Cobb : Inception. Now, before you bother telling me it's impossible...Eames : No, it's perfectly possible. It's just bloody difficult.
Mal : You keep telling yourself what you know. But what do you believe? What do you feel?Cobb : Guilt.
These aren't just dreams, these are memories and you said never to use memories!