Nov 2, 2018 · 25m · a16z
A Skeptic's View of Crypto (from the Point of View of Monetary Economics)
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In this presentation, Nobel laureate economist Paul Krugman evaluates cryptocurrency through the lens of monetary economics, arguing that Bitcoin and decentralized tokens fail to solve any real economic problem while setting monetary efficiency back centuries.
How this conversation actually went
Every chapter scored 0–10 on four independent dynamics. Hover any point for the reasoning behind the score. How this is scored →
The host as informed peer 0.0 Guest teaching 7.1 Guest disagreement 5.8 The host pushing back 0.0
speaking balance: gold is the host, purple is the guest (3 minute bins)
Sharpest disagreement ▶ 7:15 Setting the Clock Back 300 Years
Krugman forcefully rejects the core thesis of crypto advocates, arguing that using advanced computer science to recreate metallic currency's flaws sets monetary progress back centuries.
Hardest push from the host ▶ 0:00 No Host Pushback (Monologue Segment)Because the transcript provided consists entirely of a solo keynote presentation by Paul Krugman, the host did not speak or offer pushback.
Biggest teaching moment ▶ 10:30 Social Reputation vs. Algorithmic ProofKrugman provides a foundational economic lesson on how repeated games and institutional reputation serve as a vital social technology that modern economies rely on.
The host holds their own ▶ 0:00 No Host Counter-Expertise (Monologue Segment)The host did not speak during this monologue segment, resulting in zero host expertise demonstrations.
the scores for every segment, with the reasoning behind each
| Chapter | Topic | The host as informed peer | Guest teaching | Guest disagreement | The host pushing back | Why |
|---|---|---|---|---|---|---|
| Event Overview and Introductory Presentation Details | 0 | 6 | 4 | 0 | Because this is a solo presentation segment, host scores remain 0. Krugman introduces his perspective as a monetary economist and skeptic, framing cryptocurrency as an ingenious answer searching for an actual economic problem. | |
| Evolution to Paper, Fiat, and Cashless Digital Transactions | 0 | 7 | 2 | 0 | Krugman presents an educational overview tracing the historical progression of money from barter to coins, paper, pure fiat, and digital cashless payments. He emphasizes that monetary evolution historically aims to minimize transaction friction and resource waste. | |
| Bitcoin's Inefficiency: Setting Monetary Progress Back Centuries | 0 | 7 | 7 | 0 | Krugman sharply critiques Bitcoin for reversing centuries of monetary progress by reintroducing extreme resource costs like energy consumption. He also dismisses common hyperinflation fears by citing actual global inflation statistics. | |
| Social Technology of Reputation versus Algorithmic Verification | 0 | 8 | 5 | 0 | Krugman educates the audience on economic game theory, contrasting social technology built on reputation and repeated games against mathematical algorithms. He questions why society would discard institutional trust in favor of digital verification. | |
| Institutional Defectors, Remittances, and Regulatory Realities | 0 | 7 | 6 | 0 | Krugman argues that political instabilities cannot be solved by cryptocurrency and uses a mobile roaming analogy to explain high remittance fees. He warns that any successful end run around government regulation will inevitably trigger severe regulatory crackdowns. | |
| Malthusian Mining Economics and Competing Token Dilution | 0 | 7 | 7 | 0 | Applying Malthusian economic principles, Krugman explains why technological efficiency gains in mining will only drive up computational difficulty rather than lower costs. He adds that unlimited competing tokens threaten to dilute the long-term value of any single cryptocurrency. | |
| Evaluating Store of Value Arguments: Gold versus Cryptocurrencies | 0 | 8 | 7 | 0 | Krugman analyzes data on cash holdings and gold to evaluate store of value arguments. He points out that gold and paper bills have real-world backstops like tax requirements and industrial uses, whereas cryptocurrencies lack any underlying anchor. | |
| Lack of Intrinsic Value and Concluding Assessment of Crypto | 0 | 7 | 8 | 0 | Krugman delivers a forceful conclusion, stating there is a significant probability Bitcoin could drop to zero due to the lack of an intrinsic backstop. He summarizes cryptocurrency as failing to function as actual money and representing a regression in monetary history. |
Statements from this episode (23)
Krugman: Money is a transactional lubricant, not a productive asset
“So money, first thing to say about money is remember always that money is only incidentally an asset. It's not something that produces in and of itself. Money is a lubricant. Money is something you use to facilitate transactions in the real economy.”
Krugman: The history of money is making it increasingly frictionless
“And the history of money has been one of making money increasingly invisible, increasingly frictionless. Has been one of pushing it into the background.”
Krugman: Fiat currency value is backstopped by taxes and state force
“What keeps most currencies valuable is the belief that, well, two things. The belief that governments will exercise restraint in issuing currency, ah, and the fact that legally you can pay taxes. So if you like, the thing, whole thing is backstopped by, ah, by…”
Krugman: Monetary evolution naturally moves toward a cashless digital society
“The direction of that evolution, if you're asking where, where would that lead you to think we were going, it would be towards a cashless society. It would be towards one where, ah, money was really just an accounting entry someplace, and in which payments wer…”
Krugman: Bitcoin consumes real resources like computing power and electricity
“The striking thing about Bitcoin is that it sets up a system in which, ah, first of all, ah, the creation of this currency involves a lot of real resources. We're actually spending a lot of resources now computing power or electricity to generate this, much as…”
Krugman: Bitcoin transactions are expensive and difficult to execute
“And it is in fact expensive to make transactions. It's, ah, the, ah, the actual implementation of the blockchain is, ah, ah, is one that is hard. It's hard to do transactions in Bitcoin.”
Krugman: Crypto uses advanced tech to regress monetary history 300 years
“From the point of view of monetary economists, we're exploiting cutting edge, ah, computer science, ah, to set the clock back 300 years.”
Krugman: Only South Sudan and Venezuela have inflation over 50%
“So let me give you a comprehensive list of the countries that currently have inflation exceeding 50% a year. South Sudan and Venezuela. End of story.”
Krugman: Reputation is a social technology that creates repeated games
“One way to think about that is reputation is a technology. It's, we solve a lot of problems in the economy by turning what could be one shot gains in which people literally take the money and run and turning them into repeated games in which people have an inc…”
Krugman: Crypto replaces institutional trust with digital gold-biting
“So, the interesting thing about all of this shift to cryptocurrency is it's saying, let's throw away This technology, it's more, it's a social technology rather than a, you know, a mathematical technology, but let's throw away the social technology of repeated…”
Krugman: Hyperinflation is always tied to political and social collapse
“It's, hyperinflation never happens just because governments are untrustworthy. It's always associated with political and social collapse.”
Krugman: Severe monetary crises are political issues technology cannot fix
“Cryptocurrency is not going to put food in the stores when there's no food in the stores, right? It's not, it's a, it's not fund, Venezuela's problem is not fundamentally a monetary problem, and most really severe monetary problems are not. Most really severe …”
Krugman: High remittance costs stem from market power and regulation
“In fact, I know it's not inherent in the technology of conventional banking. I suspect it has to do with a combination of market power, but also largely, you know, government enforced barriers, particularly government barriers that reinforce that market power.”
Krugman: Governments will quickly strip away crypto freedom if Bitcoin becomes serious
“And if Bitcoin became really a serious, well, ok, it you'd be amazed at how quickly whatever freedom you think you're getting via the blockchain would disappear.”
Krugman: Bitcoin mining costs will always expand to extreme levels
“Bitcoin circulation will always expand to drive the cost of producing a Bitcoin up to the point of being insane.”
Krugman: Proliferation of altcoins will plunge existing cryptocurrency values
“If people, now, one thing that could happen is that people introduce alternative cryptocurrencies. But of course, if they do that, then we have a much larger supply of cryptocurrency and the price, the value of the existing cryptocurrencies plunges.”
Krugman: Gold is not money or a medium of exchange
“Now, gold is not money. Not in any of the real senses. Nobody, you know, go into a store and try and pay your bill with a bar of gold. It ain't gonna work. Gold is not in fact a medium of exchange. It's not something you can in fact use for transactions.”
Krugman: US cash-to-GDP ratio has risen since 1980
“If you look at the United States, the ratio of currency in circulation to GDP fell steadily as far back as we can tell up until about And then it started rising again. And we actually have substantially more, ah, dollar cash in circulation relative to GDP than…”
Krugman: Two-thirds of high-denomination US dollars are held abroad
“Indirect estimates suggest that something like two thirds of those high denomination dollar notes are held outside the United States. They're being held as hoards of value, and they're being held as hoards of value even though you can't actually do business wi…”
Krugman: Best bull case for Bitcoin is acting like cash hoards
“The best argument I could possibly be persuaded for on, on the question of Bitcoin Is that Bitcoin will become like gold or high denomination notes. It'll be something that people hold in their stashes in, in in Buenos Aires, or actually high denomination euro…”
Krugman: Gold and cash are backstopped by real-world utility
“What I would say, however, is that both gold and hundred dollar bills have a, now, first time I said this, I said they, they're, they are tethered to reality. And then it turned out that that was a bad word to use when talking about, to crypto people. So, so t…”
Krugman: Significant probability Bitcoin's value eventually drops to zero
“Now, I'm not a hundred percent sure of that, but maybe, ah, ah, but I think that there's a certainly a, I would say a quite significant probability that the whole thing just drops to zero, ah, because I have not yet seen any reason why this has to be a valuabl…”