"The same past data can confirm a theory and its exact opposite! If you survive until tomorrow, it could mean that either a) you are more likely to be immortal or b) that you are closer to death."

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as an economics professor I am by nature inclined to the view that the truth isn't out there, it's in here - that usually you learn a lot more by thinking really hard about the data than you do by sniffing around for supposedly inside information.

— Paul Krugman