#18: Chess Champion Garry Kasparov Losing to a Computer, 1997, Philadelphia

In 1997, the world of chess was forever changed when the reigning world champion, Garry Kasparov, was beaten by a computer in a historic match. The victory by the computer, named Deep Blue, was a sign of the incredible progress that had been made in the field of artificial intelligence, and it sent shockwaves through the world of chess and beyond.

Kasparov’s reaction, and the crowd’s reaction, were truly unforgettable, capturing the sense of wonder and amazement that people felt at the time. But today, such a result would be far less surprising, as computers continue to push the boundaries of what is possible in fields as diverse as medicine, finance, and entertainment.