1. Bitcoin
    Especially mining and introducing a currency not backed by gold
  2. How the US Postal Service sorts mail
  3. Trash and recycling sorting
  4. How a computer can translate binary into everything we see
  5. How TV signal translates to display
  6. Audio
    Headphones, record players, all of it
  7. Evolution and Natural Selection
    I don't disagree with it, but the idea of small changes across an entire population over millions of years blows my mind
  8. How Languages Have Sprung Up and Evolved
    Especially made-up languages like Esperanto, Korean, and sign language
  9. Inflation
  10. How airlines move your bag to the correct flight