The Tennis record between Isner and Mahut will never be touch cause they play a 5th set tie breaker now. But every other record is breakable. people said that a 4 minute mile was impossible, people thought a woman breaking 11 seconds for the 100 meters was impossible, people thought beamons 8.90 long jump would never be touched, Randy Barnes shot putt world record stood for 28 years before Ryan Crouser broke it. Nobody really knows what limit humans can reach.
