That's the other problem, of course. All the apartments out there, whose doors are unlocked, waiting for us.... [He does not like the idea that his front door could be cognitively unlocked at any time, put it like that.]

But our friend earlier definitely used the key. So it's a place to begin.

[He turns, leaning back against the sink with his water.] And you're right, of course. It's just a matter of unscrewing one lock, and screwing in the other. A trained monkey could do it. [... then he grins.]

Unless we make it a little more interesting.