Define "know". I know the woman downstairs from me and her dog. I know the couple actually the hall and their dog. They just had a baby and I don't know the name. I know the guy down the hall from me. He's a good guy. I know the woman down the hall the other way and the guy on the same side. The other two units are rented on and off. New people. I forgot the name of the two folks that just moved in. Haven't met the ones on the other side yet.

Knowing names and small things? Is that to know someone?

There are over a million people within 15km of me, so that's not much.