Technology has advanced tremendously over the centuries. Neil Armstrong was the first man on the moon, which was a huge achievement at the time but is now commonplace. If rocket technology advanced so much in 100 years, imagine what is possible. Albert Einstein developed his theory of relativity, which was initially dismissed but is now used everyday. Columbus had no technology when he crossed the Atlantic 500 years ago, but now we have skyscrapers and other modern structures. If technology has evolved this much already, what may be possible in another 100 years will seem ancient to people in the future.