i have done a few experiments ,im no expert.If you photoread a book with a structure in your mind,its not very useful.Its better to understand and structure as per your frame of reference.Thats why its better to mind map after applying all activation technique.You internalise the concepts as per your understanding.If you mindmap earlier on your brain tries to stick to the structure.Well as i said im no expert ,i believe this !!!Cherio!!!