A knowledge-based margin note: M y scrawl says, “1.4M {years ago]. End of the Australopthicus.” I never would have written that kind of margin note before I started understanding the importance of encoding knowledge in long-term memory.   I’ve been thinking a lot about reading lately, and not just students’–my own as well. This week EducationNext ran a  review I wrote of Maryanne Wolf’s Reader Come Home, it was a review about an immensely important book that was also one…