B (61:46)
So not completely. Okay, so, so now this is really important. We have to distinguish the role of the dollar as a medium of exchange from the role of the dollar as a unit of account. Notice tether. And almost all stable coins are denominated in dollars. Some are denominated in euros and yen, but more than 90% are denominated in dollars. I think the short term, the growth of stablecoins will actually strengthen the role of the dollar in global markets. It'll allow people in countries that have really bad currencies to switch some of their liquid balances to dollar denominated accounts. So the first thing to note is the short term effect of using stablecoins as a medium of exchange will actually be probably to strengthen the role of the dollar as a unit of account. There are only a couple trillion of these actual physical dollars that are being handed back and forth mainly by criminals. I have some in my wallet too. I'm not a criminal, but yeah, but mainly by criminals. So the dollar doesn't serve a very big function right now as a medium of Exchange in physical dollars. But then there are other dollars that are called reserves that banks hold that are basically what is the backing thing, the sort of small piece that allows deposits to work. So that's another medium of exchange. So the Federal Reserve not only creates. It creates two media of exchange. Effectively, one are reserves, the other is dollars, and that's a medium of exchange use. But it also the dollar as a valuable thing that's exchanged in the market, that has a value relative to your commodities and services and other currencies, that's a valuable unit of account. Stablecoins are denominated in dollars, so the dollar doesn't disappear just because stablecoins displace deposits and currency as medium of exchange, because the dollar still retains its role as a unit of account, but it doesn't have to. Why? Because what is a unit of account? A unit of account is just how we denominate all of our transactions we could decide to create. So let me give an example. Suppose that we lived, we all of us lived in Champagne Urbana and Champaign Urbana. Pretty much the whole local economy, other than the university, is soybean and corn. That's what's produced there. And in fact, even the stores that sell other things. If soybeans and corns do badly, they do badly, right? So think of it for a minute like, let's get rid of soybeans. It's just corn. They grow corn and eat corn. Let's say it's a really simple life. That's all there is to it. All that we do in this one location is we grow corn and eat corn. And when we work, we. We work to grow corn. So when we work, should we be paid in dollars? Should we denominate wages in dollars? Should we denominate prices in dollars? Wouldn't it be just simpler? Yes, the answer is yes. If we just pay people in units of corn and we denominate everything in corn, because there's only one commodity called corn. Why should you, if you lived in Champagne, Urbano, you wouldn't want to if, if, if you were only eating corn. I'm not saying that's true of people in Champagne or ban. But suppose it were. Then they wouldn't want to denominate things in dollars. They just denominate them in corn. They'd be paid in corn and they'd eat corn. They grow corn, eat corn, get paid in corn. That's it. You wouldn't need a dollar numerator. Okay, now let me generalize that point. Jevons, one of the great founders of modern economics in the late 19th and early 20th century, developed the theory of the unit of account and what an optimal unit of account is, and basically showed us something very intuitive. Which is the optimal unit of account that we want to be paid in would be our consumption bundle. Because then if we know. So if, if you consume 10 different things in certain ways, you'd really like your, your payment to be denominated in that. Because then when you get paid, you know, you, you get, you know in advance, you're going to get a certain amount of consumption. So your, your pay contract translates directly into your consumption. And that means that when the, there's no like, slippage coming from variation in the value of your payment relative to your consumption preference. Right? So that's what Jevons realized. Now here's the amazing miraculous thing. Blockchain records and allows you to extract in an anonymized way what the consumption bundle is. Once it becomes a network in which services and commodities are all transacted through the blockchain, we actually can know in a particular location what the consumption bundle is. So we can get a lot closer to an optimal unit of account. And we could even now it gets really interesting. Maybe some locations will have their own specialized unit of account. So we don't just have one unit of account, but we have subunits of account. Now they'd be aggregated to create the national dollar that would be trading with other economies, but that they could have separate units of account so that people could have their own value of the sort of New England dollar and the southeastern dollar and the western dollar, and then allowing those to all be legal tender. And then having a national dollar that's awaited aggregation of that would allow us to all be paid in ways that would be much more optimal for us as a as from the perspective of consumers. Is this really practical? The answer is yes, because blockchain allows the recording of all that information in perpetuity, which we know we can access in an anonymized way. It's not trivial, but the technology already exists to do that. Selective anonymity is what it's sometimes called in blockchain transactions. And so, yeah, of course you can do that. Physically, it's not a problem. But then will the political game of bank bargains allow it? How do we get that to happen? The other thing that's an important wrinkle of that is to actually transact in something that's this sort of basket, you're going to need reserves that the different stablecoin issuers Transact with each other, basically bundle of the consumption good. And how do you do that? Well, you have, believe it or not, you would have not everyone, but some finite group. You denominate the bundle, let's say as a steak from Roots Chris Steakhouse, a filet mignon from Roots Chris Steakhouse, plus a bag of lay's potato chips, both sold by particular sellers. Okay, and then those. So how do those sellers create a reserve bundle that combines the two they issue? Instead of issuing these little cards that allow you to buy, you know, Ruth. At Ruth's Chris, you issue a filet mignon IOU. So the really interesting idea is to tokenize IOUs that are linked to specific commodities provided by or services provided by particular local firms. This sounds really far out, but actually technologically it's trivial. The tricky thing is to actually create how somebody comes up with what the optimal bundle should be. And in my papers I talk about the different trade offs there. It's going to be. There's going to be a trade off where you want to have some. You don't want everyone in the economy to be producing these tokenized reserves, but you do want it to be a small number who kind of span the consumption bundle reasonably well, but who have very low default risk. We're going to have to have algorithms about what to do with the tokens when you want to go to Ruth's Chris to redeem your filet mignon, but they're out of business, so we're going to have to. There's a fair amount of algorithmic kind of complexity to creating these reserves, but the promise of it, the reason it's worth doing is it will create so much better outcome in terms of making the unit of account much closer to what we consume. So right now we have this compromised unit of account, the dollar. It's a one size fits all. No matter what location you're in, you have to deal with it. Now, there are going to be lots of other issues like, well, should this, whose consumption bundle should this be? Should it be kind of an aggregation of the whole region? That would be my preference. But you could also imagine that this could be a political football where we use poor people's consumption bundle. Some people advocate that because they think of it as it's a form of trying to subsidize or help the poor. So I just want to keep emphasizing all of these economic ideas have to be filtered through the political system because politically, Congress decides what the legal tender is. And then finally just point out, once we get this Great system. It's still contingent. I mean, Congress could decide to start taxing stablecoins. Congress could decide to require stablecoins to give subsidies to particular targeted individuals. But I think from the standpoint of economic theory, we can see clearly that getting rid of the Federal Reserve, getting rid of the incumbent banking system in terms of the payment system, forcing the banks to fund their loans through securitization and other kinds of market means, getting rid of the Fed, not just as a clearing mechanism but even as a creation of the unit of account, would be hugely beneficial. Finally, I want to emphasize that doesn't mean that you couldn't do countercyclical policy. The way that the Fed affects the economy during recessions to try to counter recessions is that it all operates through an interest rate spread, basically by exchanging reserves for Treasuries. That's its whole mechanism. It's affecting the yield on Treasuries by exchanging reserves for Treasuries. That's what the Fed does. That's it in a nutshell. Well, you could imagine a fiscal authority constructed in the same kind of independent way as the Fed that would instead just tax and subsidize loans to affect loan spreads. So you could just say, oh, you know, we're in a recession. From now on, when you're paying a loan on your consumer debt or your mortgage, you're paying, let's say, X percent. We're going to now tell the government's going to pay 5% of your X and then that will make economic activity happen more. And then if we think the economy is going too fast, the government taxes it, the interest rate adds to the interest you pay by 5%. So we could imagine using, just as we operate on the interest rate spread between Treasuries and cash, we can operate on the interest rate spread in loan contracts with a physical device. So I just want to emphasize there isn't just, there is no real need. In fact, it's kind of strange. These central banks that have been operating for the last in the world, let's say about 150 years, there's just no reason to think that this is the technology we need for the payment system or for countercyclical policy or for lending for that matter, of course they are an entrenched interest. And all of the decisions about what our financial system can be are political decisions. We can't fool ourselves. This is not about technology. Technology is required but not sufficient.