Aren't people funny? I have to laugh because if I didn't, I'd get annoyed.

I used to work at a mailroom, and we'd put a sign out on the counter when we needed to work in the back. It was blue, with BIG RED LETTERING, and it said, "PLEASE RING CHIMES FOR SERVICE."

Heck, I would even have been okay with someone saying, "Is anyone there?"

But only 25% of the people would ring. The rest either didn't notice the sign (sigh) or would tell us that they "didn't want to bother us by ringing the chimes."

Which is why we had the sign out, of course. So they could alert us to their presence and we could get annoyed for doing our jobs.