People who say the DX will be great for textbooks have clearly never used a Kindle. I am an owner of both the K1 and the K2 and there are many things that it does exceedingly well. Unfortunately the things that it does NOT do well are exactly the things that students need to work both quickly and efficiently. What things? Well for starters:
1. Page numbers. The Kindle doesn't have page numbers like a traditional book... Instead it uses page numbering system that is fluid based upon font size. Using the smallest font you might be at location 3642, while using the largest font may mean (though you're at the exact same spot in the book) you could be at location 5681. Confusing? You bet. There is currently NO WAY to specify an absolute page number for the Kindle and no way to sync pages to a paper-based book. This is annoying, but manageable when using the Kindle to read a novel (or even a non-fiction book), but with a textbook the minute a professor asks the class to refer to page 542, the Kindle user is screwed.
2. Index and Table of Contents. With a 'real' textbook if you need to flip to the ToC or index to find something it may take a few seconds initially, but you stick a finger in the page and flipping back and forth is easy. Find yourself flipping to a section or the ToC often? Stick a post-it, or even a pencil in there and you can flip back and forth what amounts to instantly. With the Kindle it takes a second to reset the page every single time you change pages. Flip to the ToC = 1 second. Flip back = another second. Don't know quite what you're looking for, or have a lot of different pages to check through? Those seconds really start to add up. God forbid you have to navigate to a link in the middle of a page, 'cause the 5-way pointer works, but not quickly.
3. Highlights and note taking. Both highlighting and note taking on the Kindle are rudimentary at best. Highlighting in a real book = grabbing a pen and swiping. You can even use different colors to mean different things- instant metaprocessing! Can't do that with a Kindle.
Highlighting with a Kindle = opening the main menu and selecting 'highlight.' Then navigate to the first word of the section you want to highlight and click the 5-way-switch. Then navigate to the last word of the section you want to highlight and click the 5-way-switch. 'Just like that,' you've highlighted something. It's the same procedure to make a note, with the added 'bonus' that you now get to use... the keyboard. Yay. Imagine taking notes on your cellphone... 'Cause that's what writing a note on the Kindle is like. And forget about math or hard sciences... You'll never write that new equation the prof just scrawled on the board in your Kindle. Donâ(TM)t even bother trying. Finally, if you ever want to later review a note, you need to navigate to a little supertext number on the section you highlighted in order to even see what you wrote. Forget about scanning the margins for something you wrote during a study session...
Paradigm shifting devices are great when the paradigm being shifted to makes things easier and/or better. The Kindle is a positive paradigm shift for those of us who read a lot and want a more seamless (and cheaper) way to make purchases from Amazon.com. On the other hand, I don't see a positive shift for students who want to use the Kindle with their textbooks... itâ(TM)s just too cumbersome and slow. Fail.