Patri\'s First Law Of Statistics

Correlation implies causation when convenient; otherwise, there are confounding factors.

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Ha! So true.

Ha! So true.

How could it be otherwise?

How could it be otherwise?

Causation is virtually impossible to prove except in trivially simple cases, but it's usually exactly what we *want* to prove.

If someone has an awesome and easy and effective method of testing causation, I'd sure like to hear about it.

Joel - it's called a

Joel - it's called a "prospective study". Also known as a randomized trial.

Hard to do in economics, though.

Bullseye. I am going to

Bullseye. I am going to shamelessly steal that line sometime.:cool:

Patri's First law of

Patri's First law of statistics
But a randomized trial does not eliminate confounding.