Subjectivism Versus Objectivism.

Mathematics is both subjetive and objective; but primarily it is a subjective system (exactly: a subsystem of the subjective system logic), and secondarily it is an objective system (exactly: an applied subsystem of objective systems).

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And we - the humans - judge about subjectivity and objectivity. If we were not capable of using mathematics much more than (other) animals, then we would use it just subjectively, namely for self-preservation (like all [other] animals), and because we would not know or merely instinctively know that, we were also not capable of knowing what “subjective” and “objective” mean.