One postulate of sta mech is all accessible microstates are equally probable in thermal equilibrium, while according to classical mechanics this postulate is not true. But the postulate is still applicable in the real world. I remember that I read one interpretation before: 1. any particle in a system will go thru tremendously many collisions with other particles from various directions. 2. all these collisions will give a particle more or less the same thrust. And the total effect is that the state of particles appear to be randomly distributed. I want to know is this the best-received interpretation so far? Is this interpretation called detailed balance mechanism? And is there any other interpretations?