The Religious A priori

The fallacy of composition is when one reasons from the parts to the whole. In this case my argument (P2a) reasons from the fact that the universe is a collection of cotingent things to the conclusion that the universe is contingent. But this is not my only argument for the contingency of the universe, be that as it may, it is not the fallacy of composition. The fallacy doesn't happen just any time one reasons in this way. It is not fallacious to argue form the parts to the whole if the parts are all alike.

Robert Koons on Leadership University

(12/12/03)

Phl 327
Contemporary Christian Philosophy
Fall 2000, University of Texas

The argument commits the fallacy of composition: from the fact that each part of the cosmos is caused, it fallaciously draws the conclusion that the whole cosmos is caused. Response: this is a misstatement of the argument. The argument assumes that all wholly contingent situations are caused. We can prove that the cosmos is wholly contingent, so it must have a cause.

The Nizkor Project

vistied 12/13/03

The second type of fallacy of Composition is committed when it is concluded that what is true of the parts of a whole must be true of the whole without there being adequate justification for the claim. More formally, the line of "reasoning" would be as follows:
The parts of the whole X have characteristics A, B, C, etc. Therefore the whole X must have characteristics A, B, C. That this sort of reasoning is fallacious because it cannot be inferred that simply because the parts of a complex whole have (or lack) certain properties that the whole that they are parts of has those properties. This is especially clear in math: The numbers 1 and 3 are both odd. 1 and 3 are parts of 4. Therefore, the number 4 is odd. It must be noted that reasoning from the properties of the parts to the properties of the whole is not always fallacious. If there is justification for the inference from parts to whole, then the reasoning is not fallacious. For example, if every part of the human body is made of matter, then it would not be an error in reasoning to conclude that the whole human body is made of matter. Similiarly, if every part of a structure is made of brick, there is no fallacy comitted when one concludes that the whole structure is made of brick.

Thomas Rauchenstein.Copyright 1997,

The argument (Cosmological) does not commit the fallacy of composition. Just as every part of a puzzle is red, so must the whole be red; if every part of a structure consists of stone, so must the whole consist of stone. Likewise, if every possible being is in potentiality, so the whole of all possible beings is in potentiality, and thus, needs to be actualized (caused). The very nature of the parts demand that the whole be caused as well.

The Religious A priori