My house has about 900 square feet of floor space. (And an undoubtedly similar amount of ceiling.)
The living room, dining room and upstairs hallway have about 880 square feet of wall space.
Likewise, the three bedrooms have a combined wall space of approximately 896 square feet.
By comparison, the kitchen has a relatively paltry 168 square feet of wall space (not counting the space occupied by cabinetry).
This gives me a combined total of nearly 2000 square feet of wall space versus only 900 of floor space.
Those of you who use numerology for things such as predicting baseball playoffs may find some significance to these numbers. For myself, what’s clear is that even though they’re all approximations, if I could somehow figure out a way to walk on the walls, I’d have a lot more room to move around.