No, I'm not him, but stuff like fixing a sample size in advance and not stopping tests early without careful analysis are things I learned in my stat classes. This stuff should be stressed in any good intro stats class covering hypothesis testing. (I was a math major in college, so I had all of 2 courses in mathematical statistics and 0 in experimental design. I didn't go to the best school, but my stats teacher was a former industry statistician focusing on quality control.)