Zeno of Elea "proved" 2,500 years ago that motion is impossible.

How he did it? Using pure logic.
Achilles races a tortoise with a head start. To catch it, he must first reach the point where the tortoise started — but by then it has crawled ahead. So he must reach that point, but it's moved again. And again, forever. Infinitely many steps can never be completed, so Achilles never catches the tortoise. The logic seems airtight. The conclusion: motion is an illusion.
This argument genuinely paralyzed thinking about motion for centuries. What got us unstuck wasn't better logic — it was empiricism and mathematics built to fit reality.
Calculus showed that infinitely many shrinking intervals can sum to a finite time. The flaw was never in the deduction; it was in a premise that felt self-evident and was simply false. Logic transmits truth, it doesn't create it. Feed it a wrong "obvious" axiom and it outputs certified nonsense.
Austrian economics repeats Zeno's move. Praxeology claims to derive economic laws from the axiom "humans act" — a priori, declared immune to data. But every conclusion smuggles in empirical assumptions dressed up as self-evident, exactly like "you can't finish infinitely many steps."
Physics learned this lesson the hard way: continuous energy, absolute time, even locality all felt logically necessary — experiment killed each one. If pure reason fails that badly on particles, why trust it on something as messy as human beings and economies?
You don't deduce reality from an armchair. You measure it. Achilles wins the race — go check.