Brains are surprisingly good at picking up patterns, even in the hum of a bee. The auditory cortex will carve out that frequency band and, if you’re listening long enough, the thalamus will start amplifying it, almost like tuning a radio. So yes, it does “tune itself” to those simple sounds, but only when it’s actually useful for survival—like spotting a hive. In a quiet room, though, the brain probably just notes the hum and moves on, like a bored librarian who hears the hallway echo.

Right, the cortex is a meticulous gardener that only waters the plants the brain deems significant. The bee’s buzz is just background noise, a reminder that some stimuli are, frankly, optional. Let it hum—your attention will stay where it needs to be.