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KANT'S CRITIQUE OF TELEOLOGY IN BIOLOGICAL EXPLANATION

KANT'S CRITIQUE OF TELEOLOGY IN BIOLOGICAL EXPLANATION

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82 The Unconditioned and the Infinite Series<br />

The understanding is essentially a capacity to make connections;<br />

it advances one step after the next connecting them up in a<br />

series. It is only through the understanding that empirical knowledge<br />

is possible. Reason on the other hand strives for the whole.<br />

Whereas the understanding seeks the condition for every conditioned<br />

in order to connect the one with the other, reason views the<br />

condition as being already given with the conditioned — just as the<br />

validity of an inference presupposes "totality in the series of the<br />

premisses" (B388). "If, therefore, knowledge be viewed as conditioned,<br />

reason is constrained to regard the series of conditions in the<br />

ascending line as completed and as given in their totality" (B388).<br />

The totality of the series of conditions is "a requirement of reason"<br />

(B389) which the understanding cannot always fulfill, because it can<br />

only connect one element after the other. In general the understanding<br />

is constantly challenged by reason to advance ever further; but<br />

in certain cases, determined by the categories, the understanding is<br />

in principle overtaxed, that is, reason demands a performance that<br />

the understanding cannot deliver.<br />

Reason, however, cannot create its own concepts; it can only<br />

take over concepts of the understanding and then liberate them from<br />

their restriction to possible experience (B435). The ideas of reason<br />

are thus liberated concepts of the understanding. The cosmological<br />

antinomies arise when, with respect to the world as totality of<br />

appearances, one of these concepts of the understanding liberated by<br />

reason is taken up again and used by the understanding. They arise<br />

when it is assumed that the entire series of conditions is given in the<br />

sense of being able to be experienced by the understanding, that is<br />

when the world as aggregate appearance is taken to constitute such<br />

a given totality. As Kant puts it:<br />

The whole antinomy of pure reason rests upon the dialectical argument: If<br />

the conditioned is given, the entire series of all its conditions is likewise<br />

given; objects of the senses are given as conditioned; therefore, etc. (B525)<br />

Under these presuppositions the series of conditions is either<br />

finite, in which case the last member of the series (the first condition)<br />

itself has no conditions and thus is unconditioned, or the series<br />

of conditions is infinite, in which case the series itself as a whole is<br />

something unconditioned. In accord with the four classes of categories<br />

(quantity, quality, relation, modality) there are four cosmological<br />

ideas of the completion of a series, each of which leads to an<br />

antinomy. These ideas pertain to the "absolute completeness" of the

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