UX can guide the user toward what it thinks to be the best option, or it can forbid the user from choosing anything else. The former helps grandma get her task

UX can guide the user toward what it thinks to be the best option, or it can forbid the user from choosing anything else. The former helps grandma get her tasks done and lets the power user go the extra mile. The latter helps grandma get her tasks done, tells the power user he's not worth supporting and blames grandma for it.