I'm partially descended from Cherokee on one side and Choktaw on the other. However, as a computer nerd with a florescent-light tan, I am the WHITEST Native American you will ever meet. (Oddly enough, there are *blonde* native Americans less white than I am.)
I've also been blessed to keep my hearing despite working in or near various data centers and around heavy machinery. I've always been very careful about hearing protection.
I can hear the capacitors in my CRT TVs cycling. I can hear the constant whine of AC power in the walls. If I'm lucky enough to be around older electronics with real vacuum tubes, I can hear them sing or hum, depending on size.
At night, I can hear the nails squeaking in their holes as my house settles. I can hear that damn squirrel scurrying across my roof in the wee hours. Yes, stomach, I know that squirrel is edible, but I am an well-(over)-fed computer programmer and not a nomadic hunter-gatherer. Would you and my ears *please* quit waking me up for that kind of thing?
Accordingly, I'm one of those individuals who can gauge the load on their PC components simply by listening to them. This has become more true as newer motherborards tend to have throttle-able fans. I can still distinguish when my CPU decides to page out to disk even *with* the fans droning out the hard drives, though.
It can be bloody unpleasant at times. For example, I've paged 3 times while writing this post. Why? I'm running VM and a ton of RAM-hungry apps, including Firefox. I twitch every time it happens.
However, it's also saved me countless hours of frustration and lots of cash as I can often identify hardware problems by sound.
I really pissed off my neighbor once doing this. He had an AC mechanic out because his air conditioner kept quitting. Mine was as well... but I could HEAR the transformers humming oddly on the poles. (And not the good kind, where the Autobots defeat the Decepticons)
"This isn't an AC issue. It's a power issue. I've called the power company."
Made the mistake of saying that after he'd just paid for the AC service call.