It’s easy to take technology for granted, but consider that 100 years ago, only 35 percent of homes in the United States had telephones. Cellphones, which now are found in the hands of pretty much everyone, were relatively rare as recently as 30 years ago, with only an estimated 11 million in use in the United States at the time. As another example of how quickly technology improves, Neil Armstrong stepped onto the moon a mere 66 years after the Wright brothers’ historic flight at Kitty Hawk, North Carolina.
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