“Four and a half billion is a number almost beyond reckoning. The current Guinness world record for longevity is held by a French woman who lived to celebrate her 122nd birthday—so humans fall far short of living even for 4.5 billion seconds (about 144 years). All of recorded human history is much less than 4.5 billion minutes. And yet geologists claim that Earth has been around for more than 4.5 billion years.”