Whenever folks who have lived or traveled in Germany gather for a beer, sooner or later one subject is sure to rear its ugly head: what is the deal with those toilets?
People who resemble each other in some physical way tend to be connected as well; for Hadza people, similarity in age, body fat, and handgrip strength increases the likelihood of friendship.
The basic philosophical question, going back to Plato, is “What is x?” What is virtue? What is justice? What is matter? What is time? You can ask that about dark energy — what is it? And it’s a perfectly good question.
These types of distributions, unlike the bell curves we are used to for such quantities as human height, have values that reach far out into the upper reaches of the scale, allowing for both exceedingly common words such as “the” as well as much rarer words like “flother.”
The technique is painless, all indications at the moment are that it is safe, and the effects can last over the long term.