Is There a Replacement to the Dollar?

There's no replacement to the dollar until it gets replaced by a digital currency system. I don't think they're anything except an avolutionary dead and sorry to be so negative, but i think some of the issues you raise there will be very interesting. We can't run the global economy on a proof of work validated block chain. The next thing that comes after proof of stake is itherium. Were it's years away. It's probably at least a decade off, but i Think that's coming. What do you think?