Suppose you wanted to make a decision that is equally sensible for P values above X, and not sensible for P values below X. Then, knowing that a chunk of the pdf is below or above X is valuable. (If you only care about whether or not the probability is greater than 1e-3; he’s suggested there’s a less than 50% chance that’s the case).
To elaborate a little more: he’s answered one of the first questions you would ask to determine someone’s pdf for a variable. One isn’t enough; we need two (or hopefully more) answers. But it’s still a good place to start.
Suppose you wanted to make a decision that is equally sensible for P values above X, and not sensible for P values below X. Then, knowing that a chunk of the pdf is below or above X is valuable. (If you only care about whether or not the probability is greater than 1e-3; he’s suggested there’s a less than 50% chance that’s the case).
To elaborate a little more: he’s answered one of the first questions you would ask to determine someone’s pdf for a variable. One isn’t enough; we need two (or hopefully more) answers. But it’s still a good place to start.