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The media has been in a tizzy of late over a recent and especially cunning piece of age discrimination—a device known as the “mosquito,” which uses the fact that our ears get less sensitive to high-pitched noises as we get older to disperse potentially troublesome teenagers in shopping centres by causing them sonic irritation while leaving older shoppers undisturbed.
Want to test your hearing age? You can listen to the sound here (or not, obviously). I’m a near-decrepit 27, but can still make it out clearly; 30 seems to be around our office cut-off point, although it is apparently more…
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