"Imagine living the life of every human being who has ever existed — in order of birth…
Your life has lasted somewhere in the ballpark of four trillion years…" 1/2 twitter.com/PHanecak/statu…
2/2 "…You have spent approximately 10 percent of it as a hunter-gatherer and 60 percent as a farmer, a full 20 percent raising children, and over 1 percent suffering from malaria or smallpox. You spent 1.5 billion years having sex and 250 million giving birth."