I've long wanted something like this kind of always-on logging but I fear that the social element is the hardest to crack. Besides having a record of the substantial amount I reason out loud to myself, it'd be valuable to be able to really remember everything I'm present for in that level of detail, but I'd feel awkward if the recording device was obvious, I would feel subversive if it were hidden, and people may not like it very much to have someone in their life who has notes on every interaction to refer to.