Motherboard spends a day with Martin Cooper, the father of the first ever portable, handheld cell phone. If I were the brains behind a revolutionary invention that would reshape the world as we know it, I’d brag about it to everyone, but not before rubbing it in the face of my fiercest competitor. And that’s almost exactly what Martin “Marty” Copper, inventor of the cell phone, did when he created the Motorola DynaTAC 8000X, the world’s first ever handheld portable telephone. It wa