The future of reading on the ipad

A while back, when vooks were introduced (what an outdated concept!),  I was expressing doubts about how boring old text would survive when competing with multimedia on the same reading/viewing/listening device. David Eagleman's "Why the Net Matters" is a boo... a package of information produced exclusively as an iPad app. He demonstrates it here (of course, the demonstration itself could just as well have been part of the iPad package...), and it really makes me to wonder - again - what value text adds when audio, video and text converge in the same medium. (and here is another demo without narration)