When the monthly full money extra, I'm Chris Hill.

Few topics have captured the intrigue of the investing world over the past few years,

the way that Bitcoin has.

Even investors who don't fully understand what it is or how it works are still interested

in knowing if Bitcoin is a good investment.

By definition, it's a digital currency, but is Bitcoin money?

This is something Charlie Wielin has thought a lot about.

In addition to being a bestselling author, he's also spent over a decade teaching economics

and public policy at Dartmouth College.

When we spoke a few years ago, he shared why for him, Bitcoin does not pass the money test.

Money traditionally has three attributes.

The first is that it's a unit of account.

So when you go around doing transactions, you think in terms of that unit of account.

So when you're in the United States, you think in terms of dollars, if someone tells you

that something costs $23, you know how much that is worth.

If you travel extensively in another country, you start to think in that currency.

I'll ask you, you know, how much is 100 Bitcoins worth right now?

No idea.

No idea.

Nobody thinks in Bitcoins.

And even people when they get paid at the Bitcoin foundation, they may get paid in Bitcoins,

but they're still thinking in dollars.

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