Going to bed after a nice birthday. As the Facebook birthday wishes accumulate, I notice that at age 44, I know a *lot* of people. I mean, a lot a lot, between teaching so many students every semester, and the SF and South Asian and general writing / convention worlds, and the simple accumulation of old friends and acquaintances. When I was 20, I'm not sure I would have imagined I'd know so many people a few decades later. It's nice. :-)
But also, please to forgive me if we meet in person and I can't remember who you are. My memory is starting to go, faces are not as immediately helpful as they once were, and I really am starting to need a few minutes of conversation with someone before it comes back to me who they are and how I know them!