He never explained why.
Sheldon said nothing. For once. Monday after school, Sheldon rewound the tape. He watched the dinner scene three times. On the fourth viewing, he freeze-framed on a single frame: Mary's hand resting on the table, George Sr.'s hand pulling away a half-second too fast. young sheldon s04e18 4k
He called his Meemaw.
"Turn it off, son."