If Capitalism Begins As The Practical Idealism

A Theoretical System Does Not Merely State Facts Which Have Been Observed And That Logically Deducible Relations To Other Facts Which Have Also Been Observed.

The Implications Of These Considerations Justify The Statement That All Empirically Verifiable Knowledge Even The Commonsense Knowledge Of Everyday Life - Involves Implicitly, If Not Explicitly, Systematic Theory In This Sense.

It Is That Of Increasing Knowledge Of Empirical Fact, Intimately Combined With Changing Interpretations Of This Body Of Fact - Hence Changing General Statements About It - And, Not Least, A Changing A Structure Of The Theoretical System.

If There Are Four Equations And Only Three Variables, And No One Of The Equations Is Derivable From The Others By Algebraic Manipulation Then There Is Another Variable Missing.

Empirical Interest Will Be In The Facts So Far As They Are Relevant To The Solution Of These Problems.