Puzzle:
An Arab sheikh is old and must will his fortune to one of his two sons. He makes a proposition. His two sons will ride their camels in a race, and whichever camel crosses the finish line last will win the fortune for its owner. During the race, the two brothers wander aimlessly for days, neither willing to cross the finish line. In desperation, they ask a wise man for advice. He tells them something; then the brothers leap onto the camels and charge toward the finish line. What did the wise man say?

Answer:
Its in white so that it wouldnt be a spoiler to curiour minds. Just select using your mouse if you are a coward ;)
Too simple. Exchange the camels.