Money 4.0

Money 1.0 was simply barter, I give you eggs, you give me some hay.
Money 2.0 was I give you a precious metal like gold coins for hay.  This is really 1.0, however unlike eggs, gold coins are easily stored over time, can be sized easily to different sizes, and can have a similar value across cultures.  Gold coins to me is same as barter, but its a widely acceptable physical value to barter with.
Money 3.0 - Fiat currencies by central authority created out of thin air has value.
Money 4.0 - Fiat currencies by shared authority created out of thin air has value.  To me what we need is in my post, Ideal Form of Money, Empower the People

I ran across this video, similar sentiment but a different angle.  His accent is heavy but does a good job to explain why the current system is unsustainable.

Money being re-invented

There are various experiments going on right now for new form, or alternate forms of money.
There is BitCoin, also ebay like service for 'credits'.

I am seeing a rise in barter.  Barter is the death knell for fiat currencies and government, as it is the ultimate black market.  Barter makes it near impossible for governments to collect taxation, the lifeblood of operations.

I ran across such an experiment today, called Trade School.

It is very interesting where this all goes.