“Fascinating,” he whispered, pushing up his glasses.

To compromise, Sheldon smuggled his father’s old VHS-C camcorder into the treehouse. He planned to record his own educational series, "Sheldon Explains the Multiverse," for future generations.

And in his secret notebook, Sheldon Cooper wrote at the top of a fresh page: "Project Xvid – How My Future Self Sent Me the Key to Everything."

Sheldon froze. He wasn’t looking at a VHS tape. The file was digital—compressed with an Xvid codec, a format he calculated wouldn’t exist for at least another decade.

Instead of his own face, a grainy, pixelated video appeared. A title card flickered: .