I believe that air conditioning may be one of the top five greatest advances in human knowledge of all time. The wheel, beer, air conditioning, toothpaste and the remote control.
All good choices, but I'd put toilet paper and hot showers in top 5.
I would have guessed that was a Homer Simpson quote, except for the bit about toothpaste.😬
@GaryPoole telegraph changed the world
@GaryPoole Anesthesia for the WIN