We definitely have different physiological sensitivity to stimuli, and sensitivity can be unintuitive (sounds we can be either made more or less noticeable depe

We definitely have different physiological sensitivity to stimuli, and sensitivity can be unintuitive (sounds we can be either made more or less noticeable depending on noise), we also differ in our processing ability and finally our conscious and unconscious ability to direct attention. This leads to interesting things like for many a white noise source (actually pink noise) nicely blots out most other auditory stimuli by helping direct attention away. Yet the noise source itself heightens sensitivity (why some people find ANC annoying). Finally some people simply can not direct their attention strongly and it's worsening. Hypersensitivity it's being swallowed up as an autism trait but many people simply aren't as trained at directing attention than we were in the past since we have such loud hobbies. Mindfulness does wonders here.