“It is the great quality of verbal propositions that each one is meaningful. Algebraic and logical symbols, as used in logistics, are not in themselves meaningful. Logistics, therefore, is far more suited to the physical sciences, where, in contrast to the science of human action, the conclusions rather than the axioms are known. In the physical sciences, the premises are only hypothetical, and logical deductions are made from them. In these cases, there is no purpose in having meaningful propositions at each step of the way, and therefore symbolic and mathematical language is more useful.” – Murray Rothbard

Physical sciences, as with most of human thinking, start in the middle—it consists both theorization and experimental refutation of such theories. The representation of the latter (i.e., experimental results) can be done with mathematical symbols. But it can be also explained verbally. The specific symbolic forms do not matter, as implied in the interoperability laws of information.

Praxeology consists of axioms and its implications—i.e., explanations.

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