All research are "on average" and given a set of conditions. So, shouting "anecdata!" is not a as strong as it sounds. There are many circumstances to consider.

All research are "on average" and given a set of conditions. So, shouting "anecdata!" is not a as strong as it sounds. There are many circumstances to consider. [Disclaimer: I am person who regrets not "just doing it" while waiting for better times - and motivation for a particular project evaporates in years.]