Why not "personne"

Question

It seems to me in spoken French you can say "Personne ne s'interesse" (or maybe "personne s'interesse") but apparently that's incorrect and, when a group is mentioned beforehand, you have to say "Aucun(e)"?  If that is so, why is that?

Maarten Kamp · Accepted Answer

David, 
‘ personne ‘ and ‘ aucun(e) ‘ don’t have the same meaning, just as in English ‘ no-one ‘ and ‘ none ( of them  ) ‘ are not identical either. See link below to previous comments on the difference. 
In general, French tends to be more precise and ‘ honour ‘ differences in meaning more than happens sometimes in English.
 https://french.kwiziq.com/questions/view/aucun-vs-personne