Some friends are throwing a party and notice that George isn't there. "Where is George? He should be here; he isn't usually late."

"Maybe he's still sleeping?"

"No he couldn't still be sleeping, I saw him going for a run this morning."

"Maybe he's sick?"

"No, he couldn't be sick, I was Skyping with him this morning and he didn't seem sick."

"Then he's probably stuck in traffic."

"No, he couldn't be stuck in traffic, the news says that the roads are moving well."

"I'll text him to see where he is." George texts back that he didn't get an invitation to the party.

"Oh no! I must have sent the invitation to the wrong address!"