We assume that physics, consisting of three main branches, classical physics, quantum physics and general relativity, is probably too big for the human brain.
However, some physicists and mathematicians claim that quantum mechanics can contain all of physics, which is not correct.
Quantum mechanics is a large and important subset of physics, but not physics as a whole.
The question is it possible for modern classical physics (classical physics supplemented by an appropriate definition of probability in 4D) to solve many quantum mechanical problems in 1D, 2D and 3D geometry?