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The reason we tend to lose high-frequency hearing first is because of the structure of the ear. The cilia that respond to high-frequencies are closest to the opening of the cochlea and so closest to incoming sound and do not benefit from the sound being dampened by having to travel through the entire structure before reaching them, so they are often the first to be damaged.
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Nobody plans to screw up their lives...
...they just don't plan not to.
-Andy Stanley
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