A harbormaster is looking over his manifest . . .
A harbormaster is looking over his manifest and notices that he has 21 ships in port.
“That doesn’t make sense,” he says, “we only have berths for 20.” He gets on the radio and and tells a worker to count the ships.
A few minutes later, the stevedore radios him back and confirms that there are 21 ships.
“Impossible!” the harbormaster says. “Count them again!”
A few more minutes go by and the stevedore radios him back. “Look boss, he says, everything seems fine until I get ta spots 19 and 20. I’m telling ya, there’s 21 ships here.”
“Listen,” says the harbormaster, “there are only 20 berths. There *cannot* be 21 ships.”
“Boss, ya can say that as many times as you want, but I’m looking at ’em right now and I’m tellin’ ya that at the end of the pier are three big-ass ships and a pair a’ docks.”