Other creatures with different fundamental physical natures
including plants and the lower animals lack the capacity
to act, since they lack volition: their existence is
sustained by instinct and reflex. The acting man sees that
these creatures are fundamentally different from him in body
and mind and therefore concludes that they cannot act.
However, all humans share the same fundamental physical
nature: their bodies exhibit a similar appearance all
particulars of bodily dimensions, color, gender, and
miscellaneous small details notwithstanding. Furthermore,
the essential physical structures of every man's brain and
sense organs are the same. An acting man encountering any
other man will realize: "This man fulfills my previously
arrived at criterion for acting beings since he is
fundamentally similar to me in his characteristics, and I
know that I am an acting being."
The universality of action among human beings is no mere
hypothesis: it is a fact knowable with certainty. Just
because we can only discover the existence of action by
looking into our own minds does not mean that action is a
product of our imagination, severed from reality. On the
contrary, "our mind is one of acting persons. Our mental
categories have to be understood as ultimately grounded in
categories of action. And as soon as this is recognized, all
idealistic suggestions immediately disappear" (Hoppe,
"Praxeology and Economic Science: Sec. I"). The existence of
our actions in reality is the very reason why we can
introspect to discover the fact that we act. Implicit in
action is the pursuit of ends via real means: even if the
ends the actor pursues are in fact non-existent such as
the favor of the great Rain Spirit in watering his crops his means toward pursuing that end must exist in this
reality. If he does a rain dance to obtain the fictitious
spirit's favor, he will be dancing with a real, physical
body upon real ground, asking the Spirit to pour water on
real crops.
If a man acts, he must necessarily be linked to reality and
able to pursue real means otherwise, he would not be able
to act. Man understands the real nature of his actions
through the use of his mind through introspection. In
fact, introspection is itself an action, as are all the
fundamental processes of man's mind: as "categories of
action, they must be mental things as much as they are
characteristics of reality. For it is through actions that
the mind and reality make contact" (Hoppe, "Praxeology and
Economic Science: Sec. I"). Action can be manifested in
external reality, but it requires the mind to grasp. It
cannot be solely a mental category detached from the outside
world since it is the prerequisite for and determinant of
all human mental categories. Nor can action be a solely
empirical category distinct from the operations of the
individual actor's mind, since the mind aside from being
necessary for introspection assigns to acting man his
choice of ends and means. Action can be grasped by neither
reason nor observation alone; in bridging the two, however,
it affirms the validity of both. Since man's mind belongs to
a being acting in reality, its analytical faculty its
reason can accurately interpret human observation
or the
data of reality as available to the human senses. Moreover,
since every man is an acting being every man has the
capacity to reason accurately and make accurate
observations, if he chooses to use that capacity.
Since, following from the action axiom, man's reason can
accurately interpret his observations, it can thereby obtain
fully correct, certain knowledge about aspects of reality.
The science of praxeology consists of a systematic
collection of certain knowledge derived from the action
axiom and known to be true. Just as the action axiom is
irrefutable, so are the propositions stemming from it. Man
can know the truth of praxeological propositions fully and
absolutely: no amount of further experimentation or
empirical evidence can refute them.
Its statements and propositions are not derived from
experience. They are, like those of logic and mathematics, a
priori. They are not subject to verification and
falsification on the ground of experience and facts. They
are both logically and temporally antecedent to any
comprehension of historical facts. They are a necessary
requirement of any intellectual grasp of historical events.
(HA, p. 32) |
Praxeology offers synthetic a priori insights about reality.
It requires no observation to arrive at, but nonetheless
offers knowledge that no observation can possibly refute and many observations will confirm. Furthermore, praxeology
is synthetic a priori true, because its starting point
the
action axiom is irrefutably correct. Praxeology is not
merely analytic a priori, since it requires more than the
mechanisms of formal logic to confirm: one has to be an
acting being oneself in order to know of action and
praxeology. While formal logic is necessary in explicating
praxeology, it is not sufficient: logic is a category of
action and must be preceded by it. Axioms like the
proposition that humans act cannot be proved by means of
logic alone. They are the starting points of logical systems
and thus cannot be arrived at from within the systems
themselves. Their truth is known more fundamentally: any
attempt to refute them implicitly confirms them.
The action axiom makes possible the acquisition of a
plethora of a priori knowledge about reality. A priori true
economic propositions, however, are arrived at with especial
directness: "Economic propositions flow directly from our
reflectively gained knowledge of action; and the status of
these propositions as a priori true statements about
something real is derived from our understanding of what
Mises terms 'the axiom of action'" (Hoppe, "Praxeology and
Economic Science: Sec. I"). Economics, as a subcategory of
praxeology, is rationally knowable not merely because of the
action axiom, but as a direct derivation from it. For
example, the law of diminishing marginal utility can be
deduced from the action axiom. In acting, a man uses a given
economic good to fulfill a set of available ends. If he
values a given end above all others, he will devote his
first unit of the relevant good to that end since his
valuation of that end can only be observed via the actions
he takes to pursue it. He will necessarily devote his second
unit of the same good to the second most subjectively valued
end he deems attainable via that good's use. The value the
actor derives from the use of the good's second unit is thus
necessarily less than the value obtained from using its
first unit: the second most valuable end is necessarily less
valuable than the first. Such reasoning can be extrapolated
indefinitely, applicable to as many units of a good a given
economic actor might have, no matter what the identity of
the actor and of the good in question might be. The law of
diminishing marginal utility holds for all time periods past, present, and future
and no empirical datum could
conceivably refute it.
But the propositions of economics are not the sole extent of
a priori knowledge made possible by the action axiom's
existence. Indeed, to clearly delineate the bounds of
knowledge that can be arrived at via an axiomatic-deductive
approach, another a priori truth is needed: "that humans are
capable of argumentation and hence know the meaning of truth
and validity" (Hoppe, "On Praxeology and the Praxeological
Foundations of Epistemology: Sec. III"). Hoppe's axiom of
argumentation, like the action axiom, cannot be consistently
denied. One's attempted refutation of the existence of human
argumentation would itself be an argument.
Metaphysically, argumentation is a subclass of action: to
argue is to select a set of verbal and logical means to
pursue the end of demonstrating something to be true or
false. However, epistemologically, argumentation is prior to
action: "without argumentation nothing could be said to be
known about action" (Hoppe, "On Praxeology and the
Praxeological Foundations of Epistemology: Sec. III"). The
only way one can use argumentation is if one is an acting
being. However, the only way one knows that one is an acting
being is by using his reason and exercising argumentation.
If one did not use argumentation (including abstaining from
attempting to deny one's argumentative capacity), one would
never know that one is an acting being nor would one be
able to articulate to himself or others why one pursued a
given course of action. One would have to choose ends and
means without knowing why one chose them. This is a
contradiction in terms: the very concept of ends and means
makes no sense without the actor's exercise of reason.
Saying or thinking, "I chose means X to get end Y,"
constitutes an argument and a reason for one's action.
Without the ability to convey this reason to at least
oneself, one would not be able to act at all. The capacity
to act implies the capacity to use argumentation.
Only through argumentation can one arrive at the action
axiom and the praxeological knowledge following from it. But
because argumentation is, in fact, based on action, it can
arrive at certain truths: "the possibility of argumentation
presupposes action in that validity claims can only be
explicitly discussed in the course of an argumentation if
the individuals doing so already know what it means to act
and to have knowledge implied in action" (Hoppe, "On
Praxeology and the Praxeological Foundations of
Epistemology: Sec. III"). Since we are beings who act in
reality, our argumentation being a type of action is
also in and of reality.
It is possible to argue falsely: this would be a specific
case of using improper means to achieve a desired end.
However, correct argumentation is similarly possible, as is
a more general case of using means that actually fulfill a
given actor's goals. If it were impossible to act correctly,
then no means selected by humans would ever arrive at ends
those human beings aimed at. Since we observe ubiquitously
that human beings frequently select proper means to actually
fulfill their ends, we know that a correct pairing of means
and ends is possible. Since argumentation facilitates the
pairing of means and ends, correct argumentation must be
possible as well. If correct argumentation were impossible,
so would any sort of eradication of dissatisfaction which
can only come about from reaching one's chosen ends.
Furthermore, if no human ends including basic survival
needs were met, all humans would be long dead. We know
that many humans exist and routinely remedy
dissatisfactions; therefore, much of their action and
argumentation must be correct.
Since argumentation pertains to reality, man can obtain
knowledge about reality by using argumentation correctly.
Knowledge, the product of argumentation, is then itself a
category of action.
If argumentation is a subclass of action, then the realm of
a priori, certain knowledge can be described as the realm of
propositions that can be arrived at argumentatively, without
being contingent on any additional external observations.
According to Hoppe, the "task of epistemology [is] that of
formulating those propositions which are argumentatively
indisputable in that their truth is already implied in the
very fact of making one's argument and so cannot be denied
argumentatively" (Hoppe, "On Praxeology and the
Praxeological Foundations of Epistemology: Sec. III").
According to Hoppe, epistemology must then "delineate the
range of such a priori knowledge from the realm of
propositions whose validity cannot be established in this
way but require additional, contingent information for their
validation, or that cannot be validated at all and so are
mere metaphysical statements in the pejorative sense of the
term metaphysical." Proper epistemology will tell us which
facts can be known through reasoning and introspection and
which require specific observations to verify; furthermore,
it will tell us which propositions are absurd or altogether
irrelevant to reality. The action axiom enables such an
epistemology to claim that man can be certain in the
accuracy of both his a priori knowledge and his observation
that no fact of reality is inherently off limits to human
comprehension.
Any denial of knowledge inextricably linked to the axioms of
action and argumentation would entail a contradiction of
one's own argument and would be refuted by one's very
ability to argue. Furthermore, the realm of a priori
knowledge is praxeologically constrained: it is only as
broad as the categories of human action allow it to be. It
is possible to have genuine a priori knowledge about
something other than action, but the very pursuit knowledge
can only be facilitated by action. Knowing is an end toward
which deliberate physical and mental activity is a means.
This praxeological constraint is in fact an assurance: it
allows us to understand all genuine a priori knowledge as
knowledge of reality, and not merely of the categories of
our own minds. Hoppe explains: "Acting is a cognitively
guided adjustment of a physical body in physical reality.
And thus, there can be no doubt that a priori knowledge,
conceived of as an insight into the structural constraints
imposed on knowledge qua knowledge of actors, must indeed
correspond to the nature of things" ("On Praxeology and the
Praxeological Foundations of Epistemology: Sec. III").
Because action necessarily exists in physical reality, a
priori knowledge being a subcategory of action must also
pertain to that reality. Action and, in particular,
argumentation provide a figurative bridge through which the
data of reality can enter our minds and reside there without
being vulnerable to further disproof or rejection.
The ability to arrive at certain a priori knowledge about
reality deals a mortal blow to two doctrines denying the
possibility of accurate axiomatic-deductive theoretical
insights: empiricism and historicism.
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