[alsodumb]

I've had noise canceling headphones for a while now, and I love using them in flights, but somehow I could never get to use it all the time to focus like some of my friends do. I am definitely not an expert in this area, and I have no evidence to argue for this, but somehow it feels like actively producing sounds to cancel out the noise and blasting it into your ear all day (i.e., when noise cancellation is on) can't be good.

[lolinder]

Theoretically the sounds they produce cancel out the noise before either sound wave reaches your ear. I know some people experience some discomfort due to pressure changes, but the volume of the noise cancellation shouldn't be an issue by itself.