A blind American man taught himself to navigate using echolocation. His hobbies include hiking and mountain-biking, and he has now trained over 500 students in his ‘tongue-click’ technique.
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There is a surgical implant being developed that will give you an orgasm at the touch of a button.
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Mathematical proof that 1+1=2 takes 162 pages to explain in the three volume work “Principia Mathematica”.
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