So, whenever you would like to learn something fast, get other people involved, teach them what you know so you can work out what you don't. And, if you keep the channels of dialogue open, you will often find that what they have learned they apply in different ways and will learn new things you would not have discovered otherwise. Lots of value in good communication.
I think this is the key difference between the old type of teaching versus a new type. The old type made people strictly adhere to their style and memorize their truth.
A new style, as you mentioned, is to remain open minded and allow yourself to be changed when encountering new evidence.
I feel the old approach is severely deficient, and doesn't allow room for growth, the new style of open-mindedness is clearly the better approach.
There is still a long way to go. I see in the not too distant future an augmented reality classroom with global lessons and localised content. It could get scary, or it could be excellent.