is your luciferase reacting to your luciferin with magnesium ions, adenosine triphosphate, and oxygen to produce light, or are you just happy to see me?
fireflies are gorgeous at night. all glowy and luminescent and sorta miraculous. but then daylight arrives, and you’re struck by a horrible realization: oh, you’re just another creepy icky beetle. same thing happens when the bartender throws on the lights after last call.