Definition
Plain language
A three-step hierarchy of reasoning: spotting patterns, intervening to test causes, and asking what would have happened differently.
As stated in the literature
Judea Pearl's three-rung ladder of causation — association, intervention, and counterfactual reasoning — each strictly stronger than the previous.
Also called: ladder of causation
Why it matters: Many AI mistakes come from treating correlations like causes, and the ladder gives a precise vocabulary for what's actually being claimed.
For example, 'umbrellas correlate with rain' is rung one, 'forcing people to carry umbrellas doesn't cause rain' is rung two, and 'would it have rained if no one had carried an umbrella' is rung three.
Heard on the show
“Let me set up the closing frame, because I think the way the authors position this work in terms of Pearl's ladder of causation is genuinely useful, but only if we set it up right.”Episode 042 — An Agentic Scientific Computing System That Actually Remembers What It Learns