Why Does Lin-Manuel Miranda Compare Andrew Garfield to Michael Phelps?

Lin-Manuel Miranda says Andrew Garfield took a year to learn to sing and came out an amazing singer for the movie. A swimming-pool scene was in the shoot because Jonathan Larson would swim to get ideas and wrote a stream-of-consciousness song while doing laps. The production had three days in the actual pool Jonathan Larson swam in, in the village, with a stunt double and a special underwater photographer.

Lin-Manuel Miranda says he then found out Andrew Garfield is basically Michael Phelps, because Andrew Garfield's dad is a swim instructor. Andrew Garfield swam better than the stunt double. Lin-Manuel Miranda also says Martin Scorsese threw Andrew Garfield into the wild, and that Andrew Garfield gets very excited by challenges.