The Answer Is Transaction Costs
Jul 21, 2026 · 36 min · 11 segments
Send us Fan Mail We start with a simple mystery: how the same person can make a proud plan at night and break it in the morning, even while still…
Mike MungerHost
When it is costly to transact, institutions matter, and it is costly to transact.

The philosophical problem of free will isn't really about whether you can move your arm if you want to.

Every choice you make seems to have a prior cause, your genes, your upbringing, the argument you had at breakfast, the state of your blood sugar.

If every choice is the output of some prior state of the universe plus laws of physics, in what sense did you, as opposed to that chain of causes running through you, do anything? Three broad positions have organized this debate for centuries, and it's worth having the map drawn so you can envision the terrain.

Oh, and by the way, maps, one of the greatest solution to transaction cost in all of human history.

Hard determinism says the causal chain is unbroken and free will in any robust sense is an illusion.

You're actually just watching neurons execute a program written by prior causes you didn't select.

And here, philosophers are using libertarian in the metaphysical sense, nothing to do with politics.

It's very difficult to produce a random number, for example, and for exactly the same reason that randomness in your action or free will in your action is complex.

To be truly uncaused, not the result of any prior condition, is a really hard condition to sustain.

When it is costly to transact, institutions matter, and it is costly to transact.

The philosophical problem of free will isn't really about whether you can move your arm if you want to.

Every choice you make seems to have a prior cause, your genes, your upbringing, the argument you had at breakfast, the state of your blood sugar.

If every choice is the output of some prior state of the universe plus laws of physics, in what sense did you, as opposed to that chain of causes running through you, do anything? Three broad positions have organized this debate for centuries, and it's worth having the map drawn so you can envision the terrain.

Oh, and by the way, maps, one of the greatest solution to transaction cost in all of human history.

Hard determinism says the causal chain is unbroken and free will in any robust sense is an illusion.

You're actually just watching neurons execute a program written by prior causes you didn't select.

And here, philosophers are using libertarian in the metaphysical sense, nothing to do with politics.

It's very difficult to produce a random number, for example, and for exactly the same reason that randomness in your action or free will in your action is complex.

To be truly uncaused, not the result of any prior condition, is a really hard condition to sustain.
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