When you're the only one who can see something, sometimes it feels like you're in on a special secret. The hard part is getting anyone to believe your secret is real. This week, people trying to show others what they see—including a woman with muscular dystrophy who believes she has the same condition as an Olympic athlete.
Learn more or listen again to this week's episode.
Photo: Side-by-side comparison of Priscilla Lopes-Schliep and Jill Viles — from Jill's packet that she sent to David Epstein.