In the last centuries the world only got better: we got democracy, we beat the nazis, communism failed, global wealth rising and rising, production output rising and rising, less and less children don't learn to read, write and maths - even world hunger is on the retreat.

However, this is not a law of nature. The world improving is not like gravity - the nazis could have won, democratization could have failed and Bitcoin could stay a niche internet money. Would be a pitty but it's theoretically possible.