I think the issue is what is conditioned on what else.
a) If it is this thing, where do you find it?
b) If it is this place, how likely is it to be there?
White boards are found in offices, in public & private schools, in public & private colleges, and in homes. I would guess that more than half of all whiteboards are in private industry. The answer to (A) is not “public”. But if the place in B is public, sure, it’s pretty like to be there.
Anyway… Moving on…
I assume soyleche is asking about it’s existence 300 years ago?
Also, this thread is getting long. And i find it hard to navigate long threads in this system. I assume others do, too. I propose splitting it up. (Which i can do.) Any objections? Stuff i should consider before doing so?