On the subject of forces in physics, something important came to my attention when reading Michio Kaku's new book "Quantum Supremacy". He states that life is only possible because it obeys the known laws of physics; that on the quantum level, electrons are taking the path integral (the path of least resistance) in life processes, such as in catalysts, which speed up chemical reactions, and in proteins, which facilitate many biological functions. Richard Feynman won the Nobel Prize in Physics for discovering the path integral and I am surprised he did not interpret it as a fifth force in physics since it is purely mathematical like the others. It might even explain consciousness itself.
What's happening on the quantum level is that electrons exist in an infinite state of probability, but when we observe them they only appear in one place. The process Of protein folding, catalyzing, photosynthesis, and nitrogen fixation do not involve the most likely path electrons naturally take, but the most efficient; one that builds and creates order out of the chaos of inevitable disorder in any closed thermodynamic system.
Kaku's thesis is that quantum computing can show us all the ways this happens on a molecular level. If it is indeed a force, various patterns should emerge, showing how the path of least resistance when certain atoms are combined obey a fundamental law of physics and not necessarily biology.