> There is more to it than this. Humans are really complex, and something that is proven to work for many on a population scale may not work in every individua

> There is more to it than this. Humans are really complex, and something that is proven to work for many on a population scale may not work in every individual case. And the flip-side is that anecdotes to the contrary do not mean that a population-scale observation is invalidated. (I know this isn't the point you're making, but others in this thread are.)