I'm a Brit. I grew up watching Doctor Who (Tom Baker and on). It never occurred to me as a child that Daleks can't climb stairs. Besides the Cybermen have legs and are pretty unpleasant as well.

One evening, you'll leave your Roomba happily running around in the living room, downstairs, and wake up to it bumping into a leg on your bed ... upstairs. I'll fear your Roomba for you: I've seen what happened to Skaros.

I don't. Who knows what that little maniac is up to? I mean, why is he mapping my house?

My dog knows what's up. He is not a fan of Roomba.