I am studying Reif's Fundamental of Statistical and Thermal Physics. (p.91) he explain about Reversible and Irreversible processes by using "The number of accessible states in equilibrium(Ω)". in his point of view, each accessible states have equal probability. comparing to weather Ω(initial) and Ω(final) is larger or not decides reversible system or not in isolated system. Then, might I see Reversible process in real world?? in his point of view, Reversible Process means just low probability. I think I can make probability that final and initial state have little difference. So, I could probably see reversible processes. Am i right? How can i accept this theory??