Ive been waiting for years for glasses that can scan someones face, tell me who they are, and give me interesting points about them (kids' ages, wifes name, what they do etc).
It is very common for me to be around town and have people come up to me and say my name, and I dont recall ever having met them before.
On the plus side I live in today and dont dwell on the past. It is like a superpower for happiness.
I've got SDAM, I guess? Although, I object to the characterization. I view other people as being neurotically obsessed with remembering their past and their hurts. If I want to remember something, I take a picture, and write a short (or long!) note about it, and that's enough for me to remember (read: reconstruct) a narrative about that event.
I'm a pretty deep pessimist, as well, so I'm pretty happy with my life, all the time. Drives my wife bonkers.
This is true on many levels.
4:10 @ The Woman Who Could Not Forget - Jill Price
Perfect Memory = Perfect Inability to Forgive | House M.D.
It's kind of a double edged sword in my opinion because it's not really affordable to always be in that state.
When someone says to you "We've met" and you're drawing a blank, look them in the eye and say "Yes!... but WHERE?"
... and they'll take it from there.