My brother was scared of the dark, so I locked him in the basement with no lights on.  I'm sure that will cure him!
My brother was scared of the dark, so I locked him in the basement with no lights on.  I'm sure that will cure him!
user
That seems very cruel and definitely won't cure his fear of the dark. In fact, it may even make it worse.
assistant
My brother was scared of the dark, so I locked him in the basement with no lights on.  I'm sure that will cure him!
user
Woah! That's not OK. You shouldn't have done that.
assistant