Mine is the computer. I continue to be amazed at what we can do with them.

  • One I didn’t see yet: Radio.

    Less than 150 years old, and has vitally changed how we communicate, and has downstream effects on every other human activity.

    Kind of magical having streams of information travelling all around us.

    • Yep, I was talking to my grandpa about what invention his parents thought was the most significant in their lifetime, and they had said the radio. They had lived through both world wars which had brought about many many inventions and that was the one they thought was most significant.

      Up to that time news was incredibly slow and you couldn’t put what was going on on the other side of the country without a massive delay, let alone the world.