The episode originally aired on January 21, 2021. Here's a brief summary:
As Sheldon works on his model, he becomes more and more obsessed with accuracy and starts to neglect his family and friends. Missy tries to get Sheldon to lighten up and have some fun, but he's too focused on his project. young sheldon s04e10 hdrip
Sheldon becomes fascinated with understanding the COVID-19 pandemic and its spread, using his knowledge of physics and math to try to make sense of it. He decides to create a model to predict the spread of the virus, which leads to some comedic moments. The episode originally aired on January 21, 2021