Cash is just a very handy way of keeping track of everybody's contributions. You could do without it by keeping track with a huge database, Those are essentially what we already have with automatic deposits and credit card bills. Not keeping track of it somehow, is a recipe for disaster. Human beings are not perfect, honest, angels!

Each giving to their ability, and taking according to their needs, doomed Communism right from the start. Nobody is that altruistic, even if they think they are.

We're flying electric helicopters on Mars yet you can't turn on your clothes dryer in Texas. That's because scientists are in charge of Mars, and Republicans are in charge of Texas.