If an expression shows the variables x, y and z (all) increasing (moving) at uniform speeds then we may find x, y and, z always moving together because a force of constant magnitude may bind them together. In this case there is no change in the internal energy of the point P(x, y, z); it is not a dynamic situation and in this cases we get a straight line

An impossible situation arises if x, y and z change (move) at different and continuously changing speeds. Here every instant of time would carry a combination of different dynamic situations WITHIN a single changing reality (point-mass P or a mass of gas) and it shows that point P is in a state of change and it continuously forgets its past. This is the reason in case of a real gas although the ACT of compressing a gas FILLS time physicists cannot express p, v and T as the function of time. Therefore pv=RT has NO temporal continuity and it cannot represent the ACT of compressing the gas. Therefore the FORMULA pv=RT represents a series of TAUTOLOGY. A ‘gas law’ for each particular gas can only be shown by an actual curve drawn statistically for that gas and its condensation is justified by the gas itself. To create a wrong impression that pv=RT is not wrong we say that it only applies to ‘ideal gas’ (human creation) as if a gas created by God is not ideal and it is imperfect! The theory gives an impression that man can assign value and get value. But the expression is neither statistical nor phenomenological. Therefore pv=RT is wrong without time appearing in an explicit manner in the formula. But in a dynamic situation every instant carries a combination of different dynamic situations within a single changing reality justifying forgetting of the past. This is the reason condensation of a gas is reproducible but according to the gas law condensation is illusion and no equation can be an equation of a natural dynamic situation. Every equation representing a natural phenomenon must fall in one of the two categories: tautology or statistical.