Logic / Logic 344 · Atom · ~20 seconds
Three Interpretations of Probability
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State
Classical: favorable over equally possible outcomes. Frequency: observed long-run rate. Subjective: calibrated degree of belief.
Show
A fair die (classical), an actuarial table (frequency), "70% she takes the offer" (subjective).
Watch for
All three obey the same calculus that follows. The interpretation question is what the numbers *mean*, not how they combine.