The TV in the corner of the living room flickered, even though it wasn't turned on. Sheldon tilted his head. “Fascinating. Electromagnetic interference without a power source.”

Back in 1994, young Sheldon grabbed his notepad and wrote one sentence:

Sheldon Cooper sat in his usual spot on the couch, legs swinging just above the floor, a fresh notepad on his lap. It was the summer of 1994, and in exactly 47 minutes, his father would come home from work, his mother would start dinner, and Missy would attempt to annoy him into a scientific outburst.