What I know is that technological progress was very slow, until suddenly there was a breakthrough and it rapidly accelerated. Now, we have enough of the fundame

What I know is that technological progress was very slow, until suddenly there was a breakthrough and it rapidly accelerated. Now, we have enough of the fundamentals down that new technological breakthroughs are happening extremely rapidly. What a time to be alive, of course, but what suggests alien civilizations wouldn't follow the same trend of rapid acceleration rather than constant growth?