Kevin Simler

no - but I've only read it once, one of those "too close to my own thoughts to see clearly" perhaps

I like your extension of the pointing thing and network effects, great examples - and space/Mars is SO important

yeah. I had a section on aggregate meaning (by analogy with GDP) but it didn't make the cut. Space exploration adds so much

sometimes there's a lot of expression of missing like The Last Psychiatrist and @pmarca but usually others don't notice

you have to constantly remind people you exist - and if they DO notice, there's no way to easily express it

services send pleading emails but I'm surprised no service has figured out to remind active users that absent users still exist

and allow them to express their missing in some way - slightly evil but a possible application