History
Before alarm clocks, people hired human wake-up calls
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Imagine paying a grumpy guy to aggressively spit vegetables at your bedroom window at dawn. During the Industrial Revolution, factory workers needed to wake up on time but mechanical alarm clocks were too expensive. So, they hired 'knocker-uppers' who used long poles or peashooters to relentlessly barrage their glass windows until they woke up. Peak human ingenuity masquerading as public nuisance.
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