I ran into that problem with others and proved them wrong some are still in denial. That's why I always tell people "be careful who you tell because they alot of people will try and might plant a bad seed in your head" Activation-consider it like a Ahha moment, we all had them remember a problem you had in the answer just spontaneous came to you out the blue? Mindmapping aids in your visual thinking,memory and helps your brain build a structure of the material. Once you get into photoreading more keep your mindmaps (I put mine in the first pages of my books) down the line if you want to go back over the book review your mindmap you will be suprised out much infomation comes back to you.