Truth 17. You're not as clever as you think you are

In 1869, Major John Wesley Powell organized an expedition of ten men to explore the Green and the Colorado Rivers in the heart of the Grand Canyon. They traveled almost 1,000 miles by open boat through some of the most legendary rapids in the world. With the long journey and spoilage of their meager supplies due to moisture, their food was running out. There was no clear end in sight. After more than two months of battling the river, three men from the party took their leave of Powell at what became known as Separation Canyon. They told Powell, "We surely all will die if we continue on this journey." They were certain that the way forward meant death, so they decided to take their chances hiking ...

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