Lumifer comments on Problems with learning values from observation - Less Wrong

0 Post author: capybaralet 21 September 2016 12:40AM

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Comment author: Lumifer 21 September 2016 02:55:05PM 3 points [-]

Observational data doesn't allow one to distinguish correlation and causation.

No? If I observe a hammer striking a nail and the nail sinking into the wooden plank, is anyone going to argue that it's mere correlation and not causation?

Observational data doesn't always allow one one to distinguish correlation and causation.

I am also a bit confused since you're talking about learning values but your example is not about values but about a causal relationship.

Comment author: MrMind 26 September 2016 01:57:00PM 0 points [-]

Indeed. Pearl's "Causality" talks at length about this sort of things, and what data can and cannot distinguish between causal correlation. There's even a Sequence post about this exact topic.