What century is it if the year is 500? First century. What about if the year is -500 (500 BCE)? It's the first century BCE. You have now arrived at US numbering of "floors". Now which century is zeroth? It doesn't make sense to ask, just like having a floor numbered "zero". This might be why the ground floor is not special to us.
Are we on the number line, or counting the spaces, or counting additional layers? It's an arbitrary question or distinction, but it seems like it should be labeled somewhere in the elevator!
I'm pretty sure that format or where the first floor is labeled "1" is the most common where I live.
Labeling the second floor the first floor is frankly insane.
Edit: or maybe we do call the second floor the first floor. Not sure. Still stupid though but it's not as stupid in my language because we don't say "floor" but if you're going to say floor you should count the actual floors.
Not really. The only time I've personally ever seen a ground floor is at a hospital. Where the entrance on one side is a floor lower than the other side.
If you're presuming ground is zero then you've told us the answer you want already. Are you numbering the floors or numbering the stories? That's the real question.
What century is it if the year is 500? First century. What about if the year is -500 (500 BCE)? It's the first century BCE. You have now arrived at US numbering of "floors".
Now which century is zeroth? It doesn't make sense to ask, just like having a floor numbered "zero". This might be why the ground floor is not special to us.