Zürich - a village?

Often when I'm out in Zürich I don't see anybody I know. So mostly I think Zürich is big, like in city-big. Today was different. I sit in this Spanish place and who walks in if not an acquaintance. Hey M! Long time, no see etc etc. Later in the evening I took the bus. Sat down, minding my own business (as usual :) hearing this voice that I recognize. And there you go, two women I am acquainted with. Together with two unsuspecting guys they picked up somewhere. Don't know why, but my thoughts were along the lines of...lambs led to slaughter...