1) Great, more textbooks need to be available for everyone. 2) The EZ version is an interesting idea. Somewhat automatically generating easier/higher level ver

1) Great, more textbooks need to be available for everyone. 2) The EZ version is an interesting idea. Somewhat automatically generating easier/higher level versions of textbooks sounds like an interesting problem. I think automatically changing the examples to problem domains that interest the readers (or that make less assumptions) is an interesting subproblem. Textbook mass customization if you want. I've come across quite a few textbooks that used examples that were pretty common for someone who is already familiar with the domain but for someone coming in with 0 knowledge they just seemed esoteric (think programming books that use compiler/parser examples). Simply swapping those out for something more approachable for the general audience could increase the value of some textbooks quite a bit.