"It would take me too long to go through all that."
Luckily for Mr. Ryan, we aren't limited to a world where the only way to get your plan out there is to go on a Sunday morning talk show and condense it down to a 25 minute interview, or sum it up in a 90 second debate answer. We live in a world where this sort of thing is possible:
If technology can somehow figure out a way to beam 10 hours worth such brilliance into my home, surely it must be possible for Mr. Ryan to show us the math.
But he can't. Because the math can't work.