When I was a student there (hundreds of years ago) maths lived in the Mathematics and Oceanography department.
Stairs led up to all the floors from the ground floor 'atrium' sort of area. Floors were the normal, ground, one, two, three. I think it went up to three, but that doesn't matter.
Around the corner a bit was the lift. This had buttons G, M, 1, 2, 3. If you pressed M it wouldn't light up, not would it stop there as the M floor seemingly didn't exist.
However, if you pressed all the lift buttons randomly including M. It would stop at M. All that was there was a locked wooden door right in front of the lift. There didn't seem to be any other way of getting to this M floor. Lecturers would just say there's no M floor.
So, what I want to know now (assuming maths is still in the same building) is what is on the M floor? Has the M floor now been given recognition or is it still a mysterious non-floor?
I'm not mad, I swear.
...we were on a break