It's very easy to criticize visions, especially after the fact. Not trying to subvert this thread. Do we think that cash will still exist in 50 years time? Ass

It's very easy to criticize visions, especially after the fact. Not trying to subvert this thread. Do we think that cash will still exist in 50 years time? Assuming we don't, how will it work. He had a thought (maybe crazy) and went with it. I respect that, irrespective if we think it was correct or not.