Measure a group of humans on N traits and take the individual average of each trait. For surprisingly small N (think 10-ish, but obviously depending on your group size), it's highly likely that no human in your group (or even in existence) falls within 10% of the average in every trait. This is roughly equivalent to the statement that less and less of the volume of an N-sphere is near the center as N increases.
Sometimes called "the flaw of averages". Of course I learned about this from another HN post recently:
Sometimes called "the flaw of averages". Of course I learned about this from another HN post recently:
https://www.thestar.com/news/insight/2016/01/16/when-us-air-...