How fast do technologies improve across different domains?
Core argument: Patent-based estimates find over 80% of technologies improve at less than 25% per year, with a mean improvement rate of 19% annually and a standard deviation of 26%, suggesting a skewed distribution.
Analysis of patent data reveals that technological progress is generally steady, with over 80% of technologies improving at less than 25% per annum. The average improvement rate is 19% per year, with a standard deviation of 26%. This suggests a skewed distribution, where most domains, particularly in Mechanical and Other categories, improve slowly. In contrast, Computer & Communications and Electrical & Electronics domains are often in the fastest improving quartiles. The study covers 97.2% of all patents in the US system, indicating that while some domains like software and algorithms show rapid advancements, the majority of technologies progress at a moderate pace, supporting the notion of steady technological evolution.




Ed Comment, “But I didn’t find it as convincing as I hoped. One component of innovation is the exogenous given terrain of opportunity, whose difficulty of advancement ebbs and flows. Another constrain is properly trained talent, which can takes decades to train. But a real model has to explain America’s outsized success. Theirs doesn’t.”