Iridescence

As I'm performing a final cabin check on descent, I notice the glow of what I assumed to be an electronic device that had not yet been switched off.

 "Sir, as we are landing presently, I ask that you please switch that off." 

Upon further inspection, and a look of utter bewilderment, I notice that it was in fact the glow of the overhead reading light reflecting off the absurdly white pages on a novel.

Goodness gracious, I suppose this is what exhaustion feels like.