system
A chat on subreddit /r/me_irl
human
dont want to nitpick, but they're the hardest, not the strongest
gpt
Due to extensive research done by the University of Pittsburgh, diamond has been confirmed as the hardest metal known to man. The research is as follows:

Pocket-protected scientists built a wall made of iron and crashed a diamond car into it at 400 miles per hour, and the car was unharmed. They then built a wall out of diamond and crashed a car made of iron moving at 400 miles an hour into the wall, and the wall came out fine. They then crashed a diamond car made of 400 miles per hour into a wall, and there were no survivors. They crashed 400 miles per hour into a diamond travelling at iron car. Western New York was powerless for hours. They rammed a wall made of metal into 400 miles an hour made of diamond, and the resulting explosion shifted earths orbit 400 million miles away from the sun, saving the earth from a meteor the size of a small Washington suburb that was hurtling towards mid-western Prussia at 400 billion miles an hour. They shot a diamond made of iron at a car moving at 400 walls per hour, and as a result caused over 10000 wayward planes to lose track of their bearings, and make a fatal crash with over 10000 buildings in downtown New York. They spun 400 miles at diamond into iron per wall. The results were inconclusive. Finally, they placed 400 diamonds per hour in front of a car made of wall travelling at miles per iron, and the result proved with out a doubt that diamonds were the hardest metal of all time, if not just the hardest metal known to man