You won’t believe this, but the 3-point line wasn’t added to the NBA until the 1979-80 season. Before that, all field goal shots were worth 2 points. The ABA introduced the 3-pointer in 1967, and the NCAA adopted it in 1986, but the NBA didn’t make the change until over a decade after the ABA.
It revolutionized the game and added a whole new dimension to basketball strategy.