20 is round, even, nicely divisible. Settled, responsible, directed, getting everything figured out. 19 is pointy, intractable, produces remainders, reaches toward the sky, wanders across meadows, chases butterflies into the woods. 20 has to be home in time to cook dinner and wash the dishes before the food dries on them. 19 eats two dozen cookies and has a stomach ache later on, but doesn't care, because they were just that good. 20 stops after 4 cookies, or eats the rest in a frenzy of guilt, and regrets it immediately. 19 moves on, staring at the sky.