This type of number is just playing a trick on the brain. It doesn't mean anything more than Earth has a large population, but is expressed in units that remind

This type of number is just playing a trick on the brain. It doesn't mean anything more than Earth has a large population, but is expressed in units that remind people of their own mortality. A lifetime is lived sequentially, but in parallel 3 "lifetimes" of seconds are experienced by the population of Earth every 1 second of wall clock [1]. And if my unit conversion isn't totally fucked, last night the world spent over 80,000 lifetimes asleep. The world has a population large enough that the human brain doesn't comprehend the number on it's own. We need charts, graphs, and spreadsheets to even being to make 7.125 billion mean anything to our brains. [1] http://www.wolframalpha.com/input/?i=life+expectancy+%2F+world+population+in+seconds http://www.wolframalpha.com/input/?i=life+expectancy+%2F+wor...