Evidently, pilots ain't too bright

Thank you Boeing, that's most helpful!

This morning, pleasantly giddy with sleep-deprivation and last-night-of -the-trip anticipation, I found the label on the outside of my sliding side window particularly humorous. The thing is, this warning explicitly means that someone, sometime, somewhere tried to takeoff with the window wide open. How embarrasing that must have been! Also included is a picture of the massive American Airlines depot level heavy maintenance hangar just across the taxiway from our ramp at Fort Worth Alliance.