Paperback | 222 pages | Some colour images

Shipping 22nd Sept + delivery approx 2-3 days

A filmmaker who has spent twenty-five years studying misdirection sits down with an artificial intelligence and asks it, one question at a time, to examine September 11th using nothing but arithmetic, physics and its own reasoning.

Heights, speeds, timings, insurance valuations, air defence protocols and the laws of motion, taken slowly and in order, each answer tested before the next question is asked. The rule is simple and it holds throughout: follow the evidence, say plainly when something cannot be known, and never reach for the comfortable explanation.

The machine has no tribe to please, no career to protect and no prior position to defend. It can go wherever the logic leads. That turns out to matter more than anyone expected.

The early questions seem almost gentle. A phone call. A field in Pennsylvania. A wall that is lower than the aircraft said to have struck it.

Then the numbers begin to accumulate, and the arithmetic stops being polite.

Somewhere in the middle, the machine stops hedging.

What it concludes is not the story you were told.