"That's easy, boss. You're not thinking like an explorer. Or a thief. Or anyone who doesn't use the front door. It's alright; you'll get used to it." Al said, rubbing the back of his neck.

"See, you gotta think in terms of... you know. This." he tried to explain by waving his arms around. "Look. The top bit crumbled down to where it ain't nothing. So if the front door's trapped from the inside, we'll send someone to the other end, disarm the traps, and kindly unlock the door for us."
He pointed up. "I can totally throw someone light up to that ledge there. Or, y'know, smash the door and hope the trap breaks."