What we need is something that looks and acts like paper, but also captures the user's input and provides a sort of intellisense for math. Something like the c

What we need is something that looks and acts like paper, but also captures the user's input and provides a sort of intellisense for math. Something like the child of a kindle and a plam pilot (or wacom tablet). The OCR and math-lookup part would be really hard but potentially really interesting.