Sleep begets sleep?

Dear Dr. Marc Weissbluth,

I have one thing to say about your oft-quoted claim that sleep begets sleep:

Most. Overnight. Sleep. Ever.

Yes, it was another #1 record: Isaac slept 11 hours and 43 minutes last night -- following a day with a 12-minute nap. Take that, Weissbluth! (He didn't sleep straight through the night, but he did go ten hours between nursings. Yikes.)

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Note: I know it's Wednesday, so I promise a birth story entry later on today. I also promise to try to stop writing so much about sleep.