How Did Simone Biles Become the G.O.A.T.?

To end the Olympics she once thought would never happen for her, Simone Biles began her floor exercise routine on Monday and did what she was made to do: flip and twist and thrill an arena filled with people there to watch her.

Every time Biles, the most decorated gymnast in history, landed one of her wildly difficult tumbling passes, the crowd seemed to shout, “Wow!” all at once. And when she was done, standing alone on the floor in her sparkly leotard, the spectators rose to honor her — perhaps as much for her entire career as for a brilliant but flawed floor routine.

Biles stepped out of bounds twice during the routine, which was by far the most difficult that any of the finalists attempted. As a result, she did not win, as expected. Instead, she received the silver medal, while Rebeca Andrade of Brazil, her rival, won the gold by just over three one hundredths of a point. The American Jordan Chiles, one of Biles’s closest friends, won the bronze.

When Chiles’s bronze medal was announced, she cried — and Biles smiled and laughed while hugging her.

Three years earlier, Biles withdrew from nearly all of her events at the Tokyo Games after becoming disoriented in the air, a moment that prompted her to consider quitting the sport. On Monday, she finished the Paris Games with three gold medals and one silver. (Earlier in the day, she finished fifth on the balance beam after losing points because of a fall.)

Her imperfect final performances did little to dull her luster at these Games. On each day she competed, celebrities dotted the stands, making gymnastics — already a marquee sport of the Olympics — seem like the hippest club in Paris. There were Lady Gaga, Tom Cruise and Ariana Grande, and sports legends like Serena Williams, Michael Phelps and Stephen Curry. After a day at the water polo venue, Flavor Flav, the rapper, said how much he admired Biles and wanted “to meet her, shake her hand and give her a hug and tell her how proud I am of her.”