• Generations often better meter human history than years
  • That said,
    • smartphones were first manufactured 1 generation ago
    • Internet protocols were first standardized 2 generations ago
    • electronic computers were first programmed 4 generations ago
    • telegraphs were first commercialized 8 generations ago
    • calculus was first developed 16 generations ago
    • mechanical clocks were first fashioned 32 generations ago
    • books were first printed 64 generations ago
    • coins were first minted 128 generations ago
    • writing was first systematized 256 generations ago
    • farming was first practiced 512 generations ago