Looking То the FutureWhen a magazine for high- school students asked its readers what life would be like in twenty years, they said: Machines would be run by solar power. Buildings would rotate so they could follow the sun to take maximum advantage of its light and heat. Walls would “radiate light” and “change color with the push of a button.”Food would be replaced by pills. School would be taught “by electrical impulse while we sleep.” Cars would have radar. Does this sound like the year 2000? Actually, the article was written in 1958 and the question was, “What will life be like in 1978?”The future is much too important to simply guess about, the way the high school students did, so experts are regularly asked to predict it accurately. By carefully studying the present, skilled businessmen, scientists, and politicians are supposedly able to figure out in advance what will happen. But can they? One expert on cities wrote: Cities of the future would not be crowded, but would have space for farms and fields. People would travel to work in “airbuses,” large all-weather helicopters carrying up to 200 passengers. When a person left the airbus station he could drive a coin- operated car equipped with radar. The radar equipment of cars would make traffic accidents “almost unheard of.” Does that sound familiar? If the expert had been accurate, it would, because he was writing in 1957. His subject was “The city of 1982.”What would be advantage of using the radar equipment of cars?