Truth 23. No decision is an island
Your decisions affect the world around you, which, in turn, affects the value of your decisions. Confused? Consider this question: Is it a good idea to wear a bicycle helmet? This seems like one of the simplest decisions. A no-brainer (literally). Helmets protect your skull and make it more likely that you will survive a crash. But among cyclists who ride on city streets, there is also a belief that wearing a helmet makes you more likely to be hit by a car.
Are these cyclists crazy? It turns out that maybe they aren't. Ian Walker, a psychologist at the University of Bath, decided to put these competing theories to the test.14 He rigged up his bike with sensors and took to the roads. His experiment—comparing ...
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