Or it could be these tests literally do not even discriminate 99% of the population if the measurement error is near the size of the mode width. See my other c

Or it could be these tests literally do not even discriminate 99% of the population if the measurement error is near the size of the mode width. See my other comment. https://news.ycombinator.com/item?id=26292915 https://news.ycombinator.com/item?id=26292915