[scalable]

N=124 can definitely give statistically significant results. Consider the following thought experiment. You have a coin that you think might be loaded. You flip it 124 times. You get 119 tails. It is probably loaded. Lets say you get 66 tails. Could definitely be due to chance. Moral: The larger effect you study, the less sample size you can get away with. It might be that people from Tampa and Miami are different in some important way from other people. However, if you want to level this criticism, maybe you should give a reason for suspecting this? "The study is just as likely to have found an isolated effect as the posters with family members who consumed a lot of coffee and still developed alzheimers." No, no, triple no.