How is this compilation of anecdotal evidence even a thing on HN? I performed well on the Cambridge mental rotations test. An anecdote, of course, and it may b

How is this compilation of anecdotal evidence even a thing on HN? I performed well on the Cambridge mental rotations test. An anecdote, of course, and it may be due to the vitamin D I simultaneously started. Or another day, I was slumped under apathy after a promising start to the day; a dose of fish & coconut oil, and 1 last vitamin D, and I was back to feeling chipper and optimist.