Totally agree. This was obviously one of Zed's older, asshole dramatic posts and it doesn't read anywhere more clearly than him yelling about people failing to

Totally agree. This was obviously one of Zed's older, asshole dramatic posts and it doesn't read anywhere more clearly than him yelling about people failing to do statistics correctly and then blanket assuming normality on something pretty unlikely to be normal. Your method is a safe bet as long as you can collect "enough" data to be sure that you're covering all cases you claim to be covering. That being said, power analysis and data interpretation (ramp up, confounders, etc.) are all more difficult and important than this rant conveys. One R function is not your cure-all.