Oddbean new post about login | logout If you just want to measure USD too. You can do that with any fiat. The point is it's all going down against BTC. You are obsessed with USD. You don't need it to measure other currencies against each other.
Any individual can do whatever they want. I'm not contesting that. The point is, is that they are all already measured in USD because that's what the UOA is. A UOA is not a personal thing. A UOA is what a *society prices goods in.* The price of all commodities and all other currencies are set against USD. And if a pairing EVER deviates from that, traders jump in to pull them back in line. Because there's a million traders waiting for a deviation to happen so that they can get fiat.