You see, none of us saw the sandstone or the shale [of the Grand Canyon] being layed down. There's a supposed ten million year gap there, but I don't see a gap, but that might be different from what Bill Nye would see. But, you see, there's a difference between what you actually observe directly and then your interpretation in regard to the past.

"Bill Nye Debates Ken Ham" (February 4, 2014)