"Thinking" is not something we talk about.
The teacher is the only one worth listening to.
If we wait long enough, a teacher will answer her own question, so we won't have to do much work.
If I memorize enough stuff, I can get a good grade.
Books and teachers are always "right", and we learn only from them, not from any other resource in the room, such as our friends.
There is one "right answer" to any question, and it is in the book to be read.