I Think I've Finally Figured It Out

I noticed with the last colorwork sweater how astonishingly speedy it is. And the current sweater is proving just as quick. And I think I've figured out why. It's not that knitting with two hands is faster than knitting with one- it's not. And it's not that colorwork combines the speed of stockinette with the interest of patterned knitting, which it does. No, the reason colorwork goes so fast--

I just can't seem to put it down.