[forgotusername6]

Two robots

[IshKebab]

Then they can't bring anything up or down the stairs.

Still, I expect it won't matter - by the time we have reasonably priced robots that can reliably do all housework, that's like 90% of jobs eliminated from society and probably society will collapse.

[skeledrew]

Maybe one can throw things to the other :).

[gacgacgac]

My kitchen, office, living room, gaming computer, entryway, and bedroom are all separated by sets of stairs.

So that's six robots for me?

[jannyfer]

This is how I used to solve the roomba-can’t-use-stairs problem.

I’ve now moved to a single floor. Problem solved!