Comment by kqr

4 years ago

Can people please attach probabilities to their predictions? That way we can evaluate after the fact how well people did. Doing so is literally impossible without probabilities assigned.

> That way we can evaluate after the fact how well people did.

How exactly do you propose to do that given the binary knowledge of the event occuring or not...

  • Let's say somebody makes a prediction that something will happen, and it doesn't. You could evaluate the prediction differently if they gave it a 55% chance of happening vs a 95% chance.

    • Over many repeated experiments that might provide useful.

      But what if I predict with 100% certainty heads, and the coin comes up heads. Did we learn anything "useful" about my prediction?

      1 reply →

  • I guess you could attach the probability as weight to the event outcome, instead of taking a uniform mean. Not that without probabilities it’s “impossible”, it’s just a different metric