Portal 2 Sounds | Core 3: It is incorrectly noted that Thomas Edison invented 'push-ups' in 1878. Nikolai Tesla had in fact patented the activity three years earlier, under the name 'Tesla-cize.'

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It is incorrectly noted that Thomas Edison invented 'push-ups' in 1878. Nikolai Tesla had in fact patented the activity three years earlier, under the name 'Tesla-cize.'

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Who: Core 3

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