1. There's more to determining if an effect is in the statistical noise than just sample size. Effect size, for example, also comes into play. 2. Not every stu

1. There's more to determining if an effect is in the statistical noise than just sample size. Effect size, for example, also comes into play. 2. Not every study will, or even should, try to be the final word on some matter. If you come up with some novel hypothesis in social science, you're not going to jump into a 2,000 person study.