What is BFR? asked Pete Starling. For the graph’s vertical scale was labeled thus. Bolide Fragmentation Rate, Doob said. The rate at which new rocks are being produced. Is that a standard term? Pete wanted to know. His tone was not so much hostile as unnerved. No, Doob said, I made it up. Yesterday. On the plane. He was tempted to add something like I am allowed to coin terms but didn’t want things to get snarky this early in the meeting.