Could you define what you mean by "informationally equivalent"? Merely writing a word in bold all caps does not grant it magical powers.
Informationally equivalent = plays a role in the flow of information within the system that is equivalent to the role of money in the flow of information within economy.
Merely writing a word in bold all caps does not grant it magical powers.
Surely it does -- it magically made you pay attention to it :-P
How much money would it take to engineer biological immortality for at least half of the world's population, within 20 years, with 99% confidence?