At the risk of getting semantic... Value is not a single concept. The value of something to me is different to to you. And for both of us it changes over time.

At the risk of getting semantic... Value is not a single concept. The value of something to me is different to to you. And for both of us it changes over time. Value cannot really be defined, let alone measured. So we are stuck with prices. And prices are sort of connected to value. But the connection is very non linear. We can know the price of crypto (or gold or shares or credit default swaps). But it's value is purely a matter of personal taste...