Causal statements. No experiment means you shouldn't make causal statements.
You can have natural experiments, but I don't see any. Did they try kidnapping Congress and forcing them to do a total embargo on China? Seems a no.
You can have natural experiments, but I don't see any. Did they try kidnapping Congress and forcing them to do a total embargo on China? Seems a no.
"Asteroid from deep space kills millions. Asteroid causes death of millions."
No experiment is possible. Causation is clear.
With exceptions, physical statements have predictive power. With exceptions, economic statements don't. So that's why I say that causality in economics is not generally understood.