The smallest person I knew until recently turned up at our door over the weekend, and revealed himself to be a virtual Paul Bunyan. Last fall I hoisted Kailas to inspect a tree branch and he was no more a burden than a fist of balloon strings. On Sunday he made Noah look like a jockey at a sumo event.
The boy is verging on 25 pounds.
"The human baby's brain starts at 369 cubic centimeters," I read from what seems a respectable source, "and increases, during the first year of life, to about 961 cubic centimeters."
When I rest Noah's head on my spread fingers, I feel soft spots and unbridged seams between the plates of his skull. He hasn't figured out what his arms are for yet, unless you count spastic waving, which of course has its own rewards in the currency of parental amusement. It will be a few weeks before he's able to focus his eyes on a moving object. He’s helpless. For all we know, he thinks John McCain's economic plan is aces.
Kailas springs up from our hardwood floor to walk around. He fingers through our mail. He can slap his father right in the middle of the face with exciting accuracy. Who, in his own turn, deftly interprets the assault. "That's right, Kailas! That's my nose! Good job!"
The sophisticated parenting of a man whose brain measures about 1,400 cubic centimeters.
Of course that just means there's more surface area for Kai practice punch combos upon.
But that's small change. Humans pay a hefty price for their big brains and every baby is a reminder of the evolutionary tradeoff. They come out with their skulls in separate pieces, to squeeze through the birth canal and start fusing after the brain grows a bit more. The value of that gray matter is so huge, and the birth canal so small, that we bear our young in a state of helplessness almost unknown in the rest animal kingdom.
More than 20 years ago I watched a doe nuzzle its head against a calf that had just dropped out of her belly. My mother and father and brothers were all there. The young deer seemed to be less than an hour old. Shiny afterbirth glistened on its coat. Before our eyes it raised itself on four legs and took a step without falling.
Judging from Kailas’s example, Noah has 50 weeks to go before he pulls that off.
What happens in the meantime -- to judge from his father's example -- is the recapitulated emergence, in miniature and for the many-billionth time, of human culture from human biology.
The doe had no doubt invested a great deal in her calf, and may even have cheered that first step in its own way. None of us, however, noticed a buck on the premises.