The Real Reason Airlines Dim the Lights for Takeoff

comes, and make the preparation cheap enough that it costs the normal flight almost nothing. Dimming the lights inconveniences no one. Raising a shade takes a second. Yet stacked together, these habits remove real friction from the rare emergency.

It is worth saying plainly that flying remains extraordinarily safe, and the overwhelming majority of flights will never test any of these measures. That safety is not an accident. It is the product of countless small, unglamorous routines like this one, each addressing a specific failure mode that engineers and crews

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