Johnstone and Pavlovich
James Johnstone and Boris Pavlovich; independent purveyors of the so-called Johnstone-Pavlovich rule, i.e. the rule or motto that only those “things” which exist or are real are those recognized by and not contradicting the first law and second law of thermodynamics.
In science, Johnstone-Pavlovich rule, or “Pavlovich-Johnstone rule” (ΡΊ), is a general or universal rule-of-thumb which states that "things", questions, or effects not recognized by the first law and second law of thermodynamics are unreal and do not exist; things contradictory to thermodynamics do not exist.

Overview
In circa 2014, Libb Thims in discussion with Jeff Tuhtan, somewhere in Hmolpedia threads (and or possible email exchanges), were exchanging their joint agreement on one or another version of the Johnstone-Pavlovich rule.

Quotes
The following are representative quotes:

“The law of conservation applies to some things and not to others, and the things which it does not apply are unreal.”
James Johnstone (1914), The Philosophy of Biology [1]

“Every question or effect has the right to exist if it does not contradict the second law of thermodynamics.”
Boris Pavlovich (c.1935), in: Zeldovich: Reminiscences [2]

References
1. Johnstone, James. (1914). The Philosophy of Biology (pg. #). Cambridge: University Press.
2. (a) Sunyaev, R.A. (2004). Zeldovich: Reminiscences (pg. 16). CRC Press.
(b) Boris Pavlovich Belousov – Wikipedia.

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