Ever heard of compiling a summary of all the salient points, perhaps even bothering to actually research and remember? It's an old fashioned idea called "being knowledgeable" If your work is so vast then you "reference it" stating your sources.
Besides the Ipuss is only available in max memory of 64GB. If you are so enamoured with carrying around vast amounts of data, try a 20th Century idea called a "lap-top" It has the added benefit of storing and displaying data in many different formats too. dood.
Imagine you are a senior researcher, there is a power cut, you can't charge your Iphut, you forgot to fully charge it earlier, you are screwed "dood"
I can drop my file or book from a great height, it will survive, the ipad will no doubt be designed to survive the 1m drop test. Books don't fail with catastrophic loss of data when you need them most. Honest boss I opened the manual and all the letters had disappeared from the pages?
I bet it has some lovely low profile electrolytic capacitors in it, the kiss of death to all electronic devices, shortest MTBF of any component. Buy another one in 2-4 years? Books last centuries.
The beauty of a book is that I can lend it to you and still keep on working with all my other books. Sure perhaps you give me an electronic copy of your huge research tome, if I happen to have a tablet ?
Its an interesting idea looking for a market. Sometimes somethings are best left alone.
Coming soon to you, the Idiet, on your tablet you can see pretty pictures of all your favourite food, and because you've bought the latest Ismell too, you can savour it too, whilst you tablet administers your dose of appetite suppressants and tranquillisers. Whilst comfortably swathed in Steve's reality distortion field.
This luddite will stick to books and the big papery things that I fold up, swat flies with, use for packing ebay stuff, soaking up liquids, starting fires, letting the stray cat eat its diner off.
You see dood, the written word is easy to distribute, without any corporate or government control. For what you gain in convenience you loose a little control over the means of production & distribution.