Wednesday, March 6, 2024

Stage 1: From Composition to Simplicity


The Argument from Composition, or, as Feser calls it, "the Neoplatonic Proof", which I will be summarising the first stage of here, first argues for an absolutely simple or non-composite being. To do this, I will first lay out some metaphysical concepts that are required for this argument.

I will probably write other articles to individually defend these concepts and respond to objections that I come across in future, but it's recommended that one takes a look at this article first before starting to read others.

Also, please note that similar metaphysical concepts from the Argument from Motion appear in the Argument from Composition, so skip the sections here that seem familiar if you've already taken a look at the Argument from Motion.

1 Composition

A composed thing would be anything that has parts. For example, my table has physical parts like the individual legs and the tabletop.

However, parts can extend to external factors as well. For example, for my table to exist, it needs both its parts and for external factors, such as temperature to be a certain way. The parts of my table must be arranged in the arrangement of a table, or form of a table, if you will. But external factors like the  temperature must also be in a specific range, like not be too high, for the table to exist, lest the table melt[or do whatever tables do when things get too hot].

Parts can also extend to metaphysical parts as well, such as, as seen in the Argument from Motion, act and potency. Beings are composed of act and potency as much as they are of their physical parts. Properties can also be seen as a metaphysical part.

2 Ontological Priority

As briefly hinted at above, parts are in a sense fundamental to the whole composite being. That is to say, parts can exist without the whole but the whole cannot exist without the parts.

The parts are, so to speak, ontologically prior to the whole and the whole is dependent on the parts[metaphysical and physical].

So, if the parts of a whole weren't arranged in a specific manner with external factors being in a specific manner, then the whole would not be able to exist.

So, in a sense, the parts[metaphysical parts, physical parts, external factors, etc.] of a whole cause the whole to exist. And this causal series, as we will see, is essentially-ordered.


3 Essentially-ordered Causal Series

Essentially-ordered causal series are causal series where prior members of the series must continually exist in order for the causal series to continue to exist and for later members to remain as they are in the series as well. Further, in such causal series, there must necessarily be a "first" and most fundamental member, or else the series would not subsist.

To illustrate, take a stack of shirts that have been neatly folded. The shirt at the bottom holds up the shirt above it, which in turn holds up the shirt that is above that. Take the bottom shirt to be a prior member and the shirts above it later members. If the bottom shirt were removed, then this causal series of the shirts at the bottom causing the shirts above it to be held up would cease and the shirts would all drop by one shirt.

In this case, there necessarily had to have been a first shirt or else all the other shirts would have dropped and not be able to cause shirts on top to be held up anymore.

For more on essentially-ordered causal series, read this and this

4 Causal Principle

Composite beings[I explain what I mean by being here in the 1 Beings section] must be caused. More specifically, caused by its parts, as discussed above. For example, the existence of a book is caused by its metaphysical and physical parts as well as certain external factors[which could themselves be said to be some sort of metaphysical part, but that can be discussed another time].

Further, composite beings cannot be caused by itself, since nothing can be the cause of itself, as to be able to cause oneself assumes that oneself is already in existence. This is, as Feser characterises, an explanatory vicious circle.

5 Absolute Simplicity

With all the background metaphysics in place, let us reason from the existence of composite objects to the existence of a being that is absolutely simple or non-composite.

First, we being by observing that composite objects exist. This is an obvious fact of our reality.

Composite beings[or objects] must be caused, say by its parts. Yet, these parts must themselves be caused by, say, smaller parts. But, as noted above, this series is an essentially-ordered causal series, meaning that it has a most fundamental member.

This fundamental member cannot be yet another composite being, or else it would have to be itself caused by another thing. So, the fundamental member must be an absolutely simple or utterly non-composite being that has no parts and does not need to be caused by another being while being the cause of all composite beings.

Formal Articulation of Stage 1

Put more formally, the argument would go like:
P1 composite beings exist
P2 composite beings must be caused
P3 this causal series is essentially-ordered
P4 so, it must have a most fundamental member
P5 this fundamental member is either yet another composite being or an absolutely simple being
P6 this fundamental member cannot be a composite being
P7 therefore, this fundamental member is an absolutely simple being
P8 therefore, an absolutely simple being exists

Further Defenses of Claims Made Here

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