Big 20: Maps
Twenty years ago if you took a trip you took a printed map with you. They were large unwieldy papers that quickly deteriorated after a few uses. By then printed maps were laminated in sections so they lasted a bit longer. You could carry a printed atlas, but the pages were often not big enough to get a good idea of your location. Looking up a location using the index was an exercise in itself.
You could buy a CD-ROM with a searchable map of the entire country. All you had to do was load it into a laptop computer and plug it into your car’s cigarette lighter. It was cumbersome and frequently hard to read on sunny days.
Fifteen years ago you could buy a mobile GPS device to carry anywhere with you. The device display was too small and it was not very accurate.
Ten years ago the map application was a just another feature on your phone. It was accurate but the display was still small.
Five years ago you could wear a virtual reality headset and have the locations you wanted to find projected over real world around you. Clearly the display was now big enough.
Now you talk to your phone and it gives you turn-by-turn directions. No map is needed.
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