Really? I thought layout of a book (software) has nothing to do nature of screen (emissive or reflective). By a flexible layout I hope you meant the need to ref

Really? I thought layout of a book (software) has nothing to do nature of screen (emissive or reflective). By a flexible layout I hope you meant the need to reflow the text, because it is the text that is usually hard to scale across a spectrum of devices/orientations. While I do understand that the nature of screen has an "impact" on the book reading experience (or any software experience), and thus on its device sales, but I'm not sure how the screentype would affect someone's memorizability of an ebooks independent of the layout in use: flexible or rigid. That sounds a bit far fetched. Kindly quote the source of that claim/original research.