One thought I did have, for example, from a Cartesian perspective, is that I am composed of two substances: mind and body. It would make sense to say therefore that the properties of the person-object are that it is composed of those two things. That would make a substance a property, and while the identification of the mind substance/property could not be empirically shown by putting it under the microscope and seeing it, it could certainly be identified behaviorally in the person through the display of consciousness. This whole issue made me question your claim that the interjection of the body of Jesus into the wafer could not be known by the person except by faith because it is not the case that substance changes are per se undetectable. — Hanover
I think you still misunderstand the nature of substance. If a person is composed of two substances, then the person is two individual objects. To say that one thing is two substances would really be contradictory because substance is what validates the existence of the thing, so this would be like saying one thing has two existences. So substance dualism says that the human person is composed of two distinct things, body and soul, and this is why the soul can persist as a thing even without the body. It is usually argued that Aristotle's system is not consistent with substance dualism.
You're really just turning things around, saying that there is one thing (person) with two substances mind and body. This allows you to say that the one thing, person, has two properties, body and mind. The proper understanding of substance dualism would be more like two things, body and soul, each with properties. Each of these would be an individual substance.
If you check Aristotle's "Categories" Ch. 5, "Substance in the truest and primary and most definite sense of the word, is that which is neither predicable of a subject nor present in a subject; for instance the individual man or horse." In no way can primary substance be a property, this is what is explicitly excluded from the definition. "Substance" refers to the individual thing itself, not a property of the thing.
In fact, the way I saw it is that you simply divided the world into two sorts of properties: those that were detectable and those that were not. A wafer therefore has things you can know about it and things you can't. In fact, I'd go as far to say that the real words one should use instead of essential versus accidental properties is undetectable versus detectable, at as it relates to this discussion. — Hanover
It's really not a matter of dividing the world into two sorts of properties, it's a matter of dividing the world into properties and the particular thing (substance), which has the properties. This is sometimes explained as "what the thing is" (properties), and "that the thing is" (substance). In any case, the substance is the existing thing which is said to have the properties. In the case of transubstantiation the existing thing, substance, changes from being the substance called "bread", to being the substance called "body of Christ", while all the sensible properties stay the same. So at this time all those sensible properties, which were prior to this, attributed to the substance that was known as bread, are now attributed to the substance known as body of Christ.
But to your over-riding point that this is all some sort of language game and that I am just rejecting their word usage, I'm really not. — Hanover
Yes that is exactly what you are doing, rejecting their word usage. When you accuse someone of saying something untrue, you are rejecting their word usage. The Church has said, that for the purpose of our ceremony, we are not going to call this object "bread" we are going to call it "body of Christ". You object, saying that it shouldn't be called body of Christ unless it really is body of Christ, so they are engaged in some sort of deception. They say it really is the body of Christ, God ensures this, so there is no deception. It's just a matter of you rejecting the way that they use words, and how they turn to God to justify this usage.
I'm being offered no evidence whatsoever of the claim they're making.. — Hanover
The only claim they're making is that they are authorized to call this object "body of Christ". What you're failing to grasp, is that anyone is allowed to use any words they want to refer to any object. We don't need evidence to support our usage when we refer to objects with words, but if someone thinks that the word usage is wrong, then they'll point this out. If people are ok with the usage, they'll go along with it.
And so the difference between a system that I make up on the spot and the Catholic one is simply they came up with theirs first? We can pretend its longevity is based upon its validity, but that would simply overlook certain political and historical realities. — Hanover
This is pure, unabashed, conceited vanity. Do you really believe that you could come up with a ceremonial practise which would be in use two thousand years from now? Come on. Not only is it a "system", but it is a practise. That's where I think the root of your misunderstanding lies. You are looking at this as if it were a logical system or something like that, which is reducible to a set of claims. It's not, it's a practise. And that's why "word usage" is the proper representation of transubstantiation rather than "assertion", or "claim". So if you look at it for what it is, a practise, (not instinctual, but learned practise), which has persisted for that long, then you might start to grasp the gravity of it.
But I think ideas can be persistent because they are functional without being true. — unenlightened
You may have noticed that I have been purposely staying away from "truth" here. My argument from the beginning has been that transubstantiation is a valid verbal practise, this would most likely base its validity in its functionality. Only when Michael pressured me on the fact that my position is inconsistent with that of the Church, did I turn to truth. I agree that there's a claim of truth, as it's God who makes the spoken words true. But I believe that without God we do not have real objective truth to any words, as truth and objectivity are based in inter-subjectivity without God. At this point, without God, I don't think there's a real line between true and functional, as true appears to be a special type of functionality.
The point being that longevity offers us nothing in terms of proof of value or whether it'd be better to finally abandon it and move on. — Hanover
This is false though, longevity is proof of value. For human beings to preserve something, it must be of value to them, so if it is preserved it has value. Value though is inherently subjective, what I value is not necessarily what you value. Longevity is proof of a value which is passed from one generation to the next. Because it is not of value to you, you can refuse the practise. But if the practise still continues, you cannot deny that it has any value, just because it has no value to you, because the fact that it continues demonstrates that it has value.