I took as kind of implied that we weren’t talking about “doesn’t physically fit on the stairs” because that wouldn’t be a very interesting assertion to make. I

I took as kind of implied that we weren’t talking about “doesn’t physically fit on the stairs” because that wouldn’t be a very interesting assertion to make. I imagine 5-10cm is enough, at least to the point you can wrangle yourself up the stairs, but you wouldn’t be fighting there in the first place with that amount of space.