Science Is Getting Harder
This is especially true in math and physics. You will find that no matter what problem you can think of, either it has already been solved to the highest level of abstraction, or it&#x27;s an unsolved and famous problem, or not worthwhile&#x2F;trivial. Like, what about analogous of elliptic functions for non-elliptic integrals? already been done. The past century has seen a huge explosion of research into STEM subjects, from math, to physics, to biology, to computer science, etc.. Tens of billions of people people ever lived since the 1800s, and  even just a tiny, tiny fraction of them are doing research, is still a huge amount of output. There just isn&#x27;t much new ground to break, so this means discoveries will either be much more incremental or require considerably more mental horsepower.<p>Psychology is sorta the opposite: there is no limit to the number of experiments you can run on people or  possible associations between causes and effects. It&#x27;s not like psychology , literature, philosophy, or history has gotten harder over the past century, unlike math, physics, or economics. Sure, there are more advanced statistical methods, but running experiments hasn&#x27;t gotten harder. This is also why the vast majority of physicists and mathematicians are teachers rather than researchers, and why econ papers have gotten much longer and are full of dense stats methods. There are always going to be new discoveries in biology and medicine, and same for applied math and applied physics, such as engineering or astronomy, but theoretical math and probably also theoretical physics are as saturated as can be.