Is it though? If you wanted to teach humans so that they don't develop unfortunate beliefs, would it be a good approach to just keep them from reading material

Is it though? If you wanted to teach humans so that they don't develop unfortunate beliefs, would it be a good approach to just keep them from reading material that you find objectionable? If you read a book that you disagree with, or one that contains falsehoods and bad reasoning as far as you can tell, would that make you believe those things?