The Marvel of the Cycloid: The Fastest Path on Earth

Have you ever wondered if humanity, hand in hand, could encircle the globe? With about 7.5 billion of us, it's a intriguing thought experiment. However, our collective mass, if piled into one giant heap, wouldn't even fill the Grand Canyon. Yet, our potential to span the globe, figuratively and literally, through our ideas and innovations, is boundless.