The husband and wife sat face to face, each in front of their own notebook computer.

“When are the DVD’s due back?”

“I’m not sure. Let me check.”

A few clicks and clacks later, the wife responds, “They were due back two days ago!”

“Ouch. What’s the fine for that?”

I’m not sure. Let me check."

“Twelve dollars,” she says after just two clicks.

“Ouch.”

“Yeah, ouch.

“You know… If we had a time machine we could travel back two days ago and drop them off.”

“You know, you’re right.”

“Yeah, I’m right.”

“So, you’re saying, if time travel were possible there would be no more late fees?”

“That’s exactly what I’m saying!”

“Hey, you know, expiration dates wouldn’t matter either.”

“Huh? What do you mean?”

“I mean if you open the fridge and see the milk expired, you wouldn’t have to throw it out…”

“Yeah!”

“Sure. Just travel back a few days to the time when it was fine.”

“Wait… you’d never run out of milk either!”

“You’re right!”

“Yeah I’m right.”

She smiles; he smiles. They both start typing.