It's just a suspicion. Just sort of putting the pieces together. There do seem to be parts of the later books that seem 'genuine B.J. material' as I called it; sections of Long Patrol and, in Marlfox, there's a sort of dividing line about 2/3 of the way through where suddenly it gets to be almost as good as old times. Just, bang, out of the blue, from what had, up to that point, been kind of boring and redundant. Weird.