Orville produced a coin. “Toss to see who goes first. Heads you win.” He tossed: heads.
“Great!” said an excited Wilbur, and without further ado donned the contraption and launched into thin air pedalling furiously. Immediately, he plunged fifty feet to his death.
“At last,” said Orville, pocketing the double-headed coin. “Now I’m the sole heir to the family fortune.”