Why do we still use concrete and asphalt for our roadways? Why have we not found a better material that is less prone to potholes and always feels smooth to drive on?
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Another note that a lot of people don’t think about:
Technology doesn’t automatically improve with time. People have to go out and make an effort to experiment and improve things; if they stop, then so does the improvement. This is the same reason why in 60 years we went from inventing flight, to landing on the moon, and then not really advancing space much relatively in the next 60 years.
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