I was going to call this dumb, but former NTSB board member John Goglia just texted me and told me to reply with this instead: The issue raised in The Rehearsal is whether the authority gradient affects copilots' willingness to assert themselves at critical junctures and captains' willingness to hear copilots in those moments. Neither the question nor the answer dealt with this well-recognized cockpit issue. Nor the NTSB's analysis of the issue of what was lacking in current training and its recommendation of role-playing to ameliorate this situation.