I wonder if the DK effect is really an implicit narrowing or widening of the population. I would guess thay I'm an above-average sprinter. But that's because I

I wonder if the DK effect is really an implicit narrowing or widening of the population. I would guess thay I'm an above-average sprinter. But that's because I'm assuming there are 2 year olds and 80-year-olds in the population. If you ask a runner, they are likely to compare themselves against other runners and probably not even consider someone like me in the population.