[hugh]

I'm not suffering mean/median confusion (note I said "roughly"), I'm just not convinced the distribution is quite as asymmetric as you think(despite, as you say, being capped at zero). But we don't have any numbers either way, so shrug.

[nostrademons]

Could've sworn the roughly 75% figure did come from data (thought it was a Berkshire Hathaway annual report, and it may've been 70% or 80% or something in between), but I can't seem to dig it up, so I guess we'll have to leave it as idle speculation.