An elderly couple with memory problems are advised by their doctor to write notes to help them remember things.

One evening, while watching TV, the wife asks her husband to get her a bowl of ice-cream. “Sure,” he says.

“Write it down,” she suggests.

“No,” he says, “I can remember a simple thing like that.”

“I also want strawberry and whipped cream,” she says. “Write it down.”

“I don’t need to write it down,” he insists, heading to the kitchen.

Twenty minutes later, he returns bearing a plate of bacon and scrambled eggs. “I told you to write it down!” his wife says, “I wanted fried eggs!”