What mist models and theories do in order to remain valid? provide 2 facts.

The facts to validate mist models and theories are :
1) There must not be credible contrary evidence to the ideas suggested by the theory and
2) The models and theories must obey the already established laws of physics. Laws are theories which have such an overwhelming amount of evidence that they are "universal", and cannot be disproven.

Divide $252 by 3 and you get an even $84 per night.