One week after he started -- having written so far about the book's nuclear explosion (really), Marty McFly embarrassing himself in class, how North learned there actually are people with jobs like Mr. Strickland's in the film -- and he's reached page 8. THIS IS HOW YOU KNOW HE'S SERIOUS. Maybe he'll be finished by the time Cort and Fatboy show Back to the Future as their November Midnight Movie.
I'll add here that I already, happily, joyously knew George Gipe was insane. He was a co-writer of Steve Martin's The Man With Two Brains (and, I didn't know until now, Steve Martin's Dead Men Don't Wear Plaid). Also, back in the Eighties I read his novelization of Gremlins (1984) and saw him do something I've never seen done before or since: an entire chapter was TWO WORDS LONG. (Those two words: "Pete forgot.")