I think part of the advantage of paper is that it rewards you for making up useful abstractions and inventing notation on the fly, so that you don't have to wri

I think part of the advantage of paper is that it rewards you for making up useful abstractions and inventing notation on the fly, so that you don't have to write things out. On paper, you don't get red squiggles if you're using something that's not properly defined elsewhere, and there's no penalty for using a symbol that's compact but hard to type.