Years even. And really, that's kind of the issue at hand. This stuff is so difficult that very few mathematicians really understand it, and Mochizuki's work is

Years even. And really, that's kind of the issue at hand. This stuff is so difficult that very few mathematicians really understand it, and Mochizuki's work is so much more esoteric than that, that basically no one understands it, even recent Fields Medallists.