Last fall, American archaeologists dug down 300 feet and found traces of copper wire dating back 1000 years. They concluded that their ancestors had a telephone network a millennium ago.
Not to be outdone, British scientists drilled down 400 feet, finding traces of optical fiber that were 2000 years old. They gloated that their ancestors had had digital phones 1000 years before the Russian analog system.
A week later an Ethiopian scientist reported, "after digging to 500 feet, Ethiopian scientists have found absolutely nothing. This proves conclusively that 3000 years ago, our ancestors were already using wireless phones."