'There are two main goals of "money".' There are 3 main goals of money: - medium of exchange (for trade) - unit of account (fungibility, divisibility) - sto

'There are two main goals of "money".' There are 3 main goals of money: - medium of exchange (for trade) - unit of account (fungibility, divisibility) - store of value (saving with an expectation that it will be useful later) Right now Bitcoin only really satisfies the second. There is a growing set of companies and people accepting bitcoins as payment, but it is still very nascent and you can't do much in your ordinary life with it in the US. And the extreme volatility really calls into question the last. https://www.youtube.com/watch?v=0UKC7iaBKvs#t=830s https://www.youtube.com/watch?v=0UKC7iaBKvs#t=830s is a very interesting discussion about issues like trust which underpin currencies.