Sheldon: It's not stupid; it's quantum mechanics.
(The scene opens with Sheldon trying to explain quantum tunneling to Missy and Georgie.) young sheldon s06e09 dts
Sheldon: Imagine you have a ball, and you roll it up against a wall. Classically, it should bounce back, right? Sheldon: It's not stupid; it's quantum mechanics
The episode subtly sets up Georgie's future arc in The Big Bang Theory , highlighting the brewing resentment he feels over the preferential treatment Sheldon receives for his genius. Sheldon: It's not stupid