So for example, in the case of ADHD, we discovered that there are dozens of different diseases, all of which had been called ADHD at the start of the century, that actually had nothing to do with each other, except that they had similar symptoms.
Deci, ca exemplu, în cazul ADHD, am descoperit că există  o mulțime de boli diferite, care, toate, au fost numite ADHD la începutul secolului, care nu aveau nimic de-a face una cu cealaltă. doar că prezentau simptome similare.