It appears that complexity is increasing in every field. Past experience tells us that knowledge only arrived by simplification, the exact opposite of what seems to be happening currently. In Physics (1), theories have been emerging from every corner but most of them are pure fantasy and remain to be unprovable. Having a mathematical foundation to a theory does not mean that it is useful - one could always dream up such constructs but they have no implication for knowledge for lack of testability. In Medicine, doctors seem to believe that humans are extremely complex to figure out and they seem to adhere to empirical tests of small samples that emerge routinely. In economics, simple theories are now considered commonplace and academics are constantly on the hunt for more complex formulations.
Are we reaching the limits of knowledge? The slope of aggregate knowledge has been declining since the 1930s, and it is problematic for a society that believes it is progressing forward. Yes - technology and engineering have made strides but those are applications of knowledge not the creation of it. There, the current crop of technologists appear to be highly efficient - Artificial Intelligence and all - but none of these ideas are going to make a step-function change in knowledge. To make matters worse, money has been a luring influence on emerging thinkers, who have shunned academics and headed to the nightmare on Wall Street or the valley, replete with coding testosterone. The few who have stayed behind seem to be more attracted to complexity rather than creating insights. The committees who award prestigious prices, including the Nobel Prize, also gravitate toward complexity and that provides misguided incentives to young academics.
We are slowly slipping toward the next dark ages of knowledge creation. With no progress in aggregate utility metrics for society, one could argue that we are living through one of the worst time periods in human history. The arrival of the next genius, who can simplify and create knowledge is the only hope.