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Jun 2, 2025 9 tweets 4 min read Read on X
Karl Marx said he had discovered the scientific laws of economics.

Value came from labor.

Profit was theft.

Only central planning could build a just society.

But four Austrian economists—Menger, Böhm-Bawerk, Mises, and Hayek—tore his theory apart. 🧵 Image
Marx said value comes from labor.

Carl Menger said: value comes from us.

In Principles of Economics (1871), he showed that value is subjective. It depends on the preferences of individuals—changing across people, places, and time.

A violin is priceless to a musician, worthless to someone else. Food is worth more to the starving than to the full.

Labor doesn’t determine value.

Human needs do.Image
Marx said capitalists exploit workers.

Eugen Böhm-Bawerk introduced a different explanation: time preference.

Workers value present income. Capitalists provide that income now in exchange for uncertain profits later.

They take the risk, front the capital, and hope it pays off.

Profit is not exploitation. It’s compensation for time, risk, and planning.Image
But what if we abolished capitalism?

How would the state know what to produce?

Ludwig von Mises asked this in 1920—and proved socialism couldn’t answer it.

Without prices, there’s no way to compare costs or plan tradeoffs.

No real prices = no real economy.

He didn’t say socialism lacked morality.

He said it lacked logic.Image
F.A. Hayek went further.

He argued that no central planner could match the knowledge spread across society.

Prices aren’t just numbers. They’re signals—reflecting local needs, priorities, and scarcities.

Prices reflect that knowledge. They allow individuals to coordinate without any central planner needing to understand the full picture.

No expert, no algorithm, no five-year plan can replace that.Image
By the mid-20th century, Marxist economics had collapsed.

Menger refuted the labor theory of value.

Böhm-Bawerk dismantled surplus value.

Mises exposed the limits of planning.

Hayek explained why decentralization matters.

The Austrians didn’t just critique Marx. They offered a more coherent framework—rooted in individual choice, not class struggle.Image
So why does it matter now?

Because Marx’s bad ideas never die.

Price controls.

Central planning.

The constant vilification of profit.

Every time we forget what crushed Marxism, it crawls back—under new slogans, with old consequences. Image
Most students never learn this story.

They don’t know how Marx fell.

They don’t know why the Austrians won.

And they don’t realize how many of today’s bad ideas echo the same fallacies—just with friendlier branding. Image
Want to go deeper?

We made a short, free email course called How to Not Be an NPC on Tariffs.

Inside, you’ll learn:

– Why tariffs are about power, not just trade

– Who wins, who loses—and why

– What economists don’t say on cable news

– How these debates still shape our world

Start here → go.studentsforliberty.org/learn-tariffs/Image

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More from @sfliberty

Jun 19
In July 1985, over a billion people watched Live Aid.

Months earlier, Michael Jackson and Lionel Richie had written "We Are the World." All of it was a response to a famine in Ethiopia.

Almost nobody remembers who actually caused the famine. 🧵 Image
What the world saw: on October 23, 1984, the BBC aired a report by correspondent Michael Buerk with footage filmed in the Korem refugee camp by Kenyan photographer Mohamed Amin.

Within weeks, 425 television stations had rebroadcast those images of starving children to roughly 470 million viewers worldwide.Image
The crisis was framed almost entirely as a natural disaster, the work of a catastrophic drought striking a poor country. Television footage showed cracked earth, dying livestock, and skeletal children.

The government in Addis Ababa, the capital of Ethiopia, was barely named in Western coverage. Its policies were not named at all.Image
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Jun 16
The Nazis claimed racial science was settled.

The Soviets claimed Marxism was the science of history.

An Austrian refugee debunked both with one word. 🧵 Image
Born in Vienna in 1902, Karl Popper was arguably the most important philosopher of science of the twentieth century.

Trained in mathematics, physics, and psychology, by his early thirties he was already in conversation with the leading scientific minds of Europe, including Albert Einstein.

He spent his life trying to answer one question with the precision of a mathematician: how do we know what we know? That question turned out to be the most politically dangerous question of the twentieth century.Image
By the time Popper fled Austria, he had spent years watching two regimes claim that science was on their side.

Nazi Germany ran "racial biology" departments at major universities, while the Soviet Union built five-year plans on "scientific socialism." Both said the evidence proved them right, and both said anyone who disagreed was anti-science.

Popper had a problem with this. He knew what real science looked like from the inside, and what he was watching was something else wearing science as a costume.Image
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Jun 15
Modern economics built elaborate mathematical models of how markets work.

Israel Kirzner spent six decades pointing out the same problem with every one of them: the agent that actually makes markets work does not appear in any of them. 🧵 Image
In 1973, Kirzner published "Competition and Entrepreneurship" at the University of Chicago Press. He had earned his PhD at NYU in 1957 under Ludwig von Mises.

The book made a claim mainstream economists found uncomfortable. Image
Neoclassical theory models the economic agent as an optimizer. Given resources, given preferences, given prices, he maximizes.

Kirzner called this figure a "Robbinsian maximizer," after Lionel Robbins. The agent allocates known means to known ends. He calculates, but he does not discover anything.Image
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Jun 11
For decades, American politicians cited Sweden as proof that democratic socialism works.

The Wall Street Journal sent a reporter there in 2026 to see for themselves.

The Sweden they found is not the country Bernie Sanders describes on the debate stage. 🧵 Image
The mythical Sweden has high taxes, generous welfare, a big state, and equality enforced by government.

Swedish social spending in 2026 is 23.7% of GDP. That puts Sweden below France, Finland, Germany, Belgium, Italy, Austria, and Denmark. It sits at roughly American levels. Image
Sweden still taxes heavily.

Total tax revenue runs around 42% of GDP, well above America's 27%. But the structure changed.

The top income tax rate fell from nearly 90% in 1980 to around 50% today. The inheritance tax was abolished in 2005. The wealth tax followed in 2007. Sweden funds its state through a flat 25% VAT and broad payroll taxes that hit everyone, not through punitive rates on capital. Public debt is 33% of GDP. America's is 122%.Image
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Jun 5
In 1992, a 32-year-old historian became Prime Minister of Estonia.

He had read exactly one book on economics: Milton Friedman's Free to Choose.

He used it as a policy manual. Western advisors and Estonian economists told him it would fail. 🧵 Image
After gaining independence from Soviet Union in 1991, Estonia had a destroyed economy.

Inflation over 1,000%. Output falling 30% a year. Massive shortages of fuel and food. 95% of the economy state-owned. 92% of trade locked to a Russia that had stopped paying.

The standard recipe for transition economies was gradualism. Step by step. Protect vulnerable sectors. Let the market adjust slowly.Image
Mart Laar took office in October 1992. Months earlier, Estonia had already broken from the ruble and launched a new currency, the kroon, anchored to a strict currency board.

The IMF had cautioned against the rigid currency board, warning it would leave no room for monetary policy. Laar refused to loosen it and made it the foundation for everything that followed.Image
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Jun 2
Marxism's most devastating critic wasn't Hayek, Mises, or any Austrian.

It was Marx himself.

Volume III of Capital, published after his death, destroyed the theory Volume I had built. 🧵 Image
Marx published Volume I of Capital in 1867.

He told the world that a commodity's value comes from the labor time used to produce it, but he admitted in the same book that real prices don't behave that way. He promised the answer was coming in Volume III. Image
Marx died in 1883. Volume III wasn't finished. Engels spent eleven years reassembling the manuscripts.

In 1894 the volume finally appeared, with the promised resolution: "prices of production." Prices diverge from labor values in proportion to the organic composition of capital.Image
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