There were three people stranded on an island: a brunette, a redhead, and a blonde. The brunette looked over the water to the mainland and estimated about 20 miles to shore. So she announced, “I’m going to try to swim to shore.” She swam out five miles and got really tired. When she reached ten miles from the island, she was too exhausted to continue and unfortunately drowned.
The second person, the redhead, thought to herself, “I wonder if she made it. I guess it’s better to try to get to the mainland than stay here and starve.” So she attempted to swim out. The redhead had a lot more endurance than the brunette, as she swam out 10 miles before she even got tired. However, after 15 miles, she too became too tired to continue and tragically drowned.
The blonde observed the attempts of the other two and thought, “I wonder if they made it! I think I’d better try to make it, too.” She swam out 5 miles, then ten miles, then fifteen miles, and finally nineteen miles from the island. The shore was just in sight, but she said, “I’m too tired to go on!” So she swam back to the island.