I honestly think that apparent flip-flop comes down entirely to how terribly ineffective the large human sounds at stopping the train. Telling people to pretend

I honestly think that apparent flip-flop comes down entirely to how terribly ineffective the large human sounds at stopping the train. Telling people to pretend it works is not an effective measure. People can't cancel their biases just from being told to do so, and a bias against such an awful plan is quite reasonable.