Earlier quoted context omitted.
> it's efficiency in enriching participants of the stock market. Proponents would say that it is efficienct in funding ideas that are more likely to succeed, with the partecipants in the stock market taking a commission for the transactions.
My point is that "success" on the stock market isn't always a function of doing anything useful in the real world.
If inflation is low you can do the dumbest things imaginable and as long as you make your money back you can keep doing the dumb thing over and over again.
If there was decent inflation you would have to have at least some expectation of a future gain because inflation and by extension the increased interest rates would cause your net 0 investments to be a net loss.