Report of the book “Green Eggs and Ham”

Sam offered ham green eggs and to the Mr., but he not want to eat, he say would not like, but Sam insisted, but could not like if never have eat green eggs and ham.
Sam insisted all forms and bite the tired, and finally eat and like and thank Sam, he insisted and he eat and like.
The moral of the story
So, we can not say that I don´t like something, when not experienced the thing.
Why not experienced, how can we say that do not like.