I wanted to see the the features of the iPad e-textbook features that were demonstrated by Apple in their 1/19/2012 education event. The iPads on the sales floor have a 4-page sample of E.O. Wilson's "Life on Earth". The full-blown free version was not installed; that would have required a password. I wanted to see all of the features of iBooks -- especially manipulating 3D objects in textbooks. That was not included in the short LoE sample (or anything else on the load). Is there any idea why Apple has such a limited demo of e-textbooks in their store?