L
Leela
Guest
As a pragmatist, I can grant that nature is “out there” for us to describe, but I don’t presuppose that nature hands us the categories that we must impose upon it. We make distinctions that are useful for certain human purposes and there are no descriptions of reality that we ever make which float free of such concerns.You said species are “no longer thought of as static or clear cut” … but by whom? And why should I automatically believe those people (if that’s what you’re suggesting)?
Now when you say that the lines between species are “arbitrary” to some extent, this could mean different things. This could either mean that …
The first one is more of an idealist view, the second is a realist view. To assume the first one is to ultimately reject reality and live in your mind, whereas the second view is a admittance that our mind isn’t perfect but that it can improve by looking outside itself.
- We impose distinctions on a reality that actually has no real distinctions (the ultimate consequence being that reality is meaningless)
- We grasp a reality that does have real distinctions but commonly with inexact mental detail (the ultimate consequence being that reality in itself is meaningful but that our understanding of it is not … though our mental distinctions can come closer and closer to real distinctions with ongoing observation)
I’m a realist, and this is because I think reality is … well … real.
Acknowledging a useful distinction between cats and dogs is not to endorse the metaphysical view that in addition to all the cats in the world there is something else called “the essence of catness.” (I’m no expert on Aristotle (far from it), but I think this was something like his critique on Platonic forms.)“Evolutionary theory” says no such thing, unless you are referring to Evoluntionism or something like that. There are plenty of evolutionists who believe in essence. In fact, any evolutionist that acknowledge the existence of cats would thus believe in essence. To deny the existence of essence would be to deny that there is no difference between a cat and a dog. Every scientist I’ve ever come across has acknowledged there is such a difference.
This was considered to be an important question for the Pre-Socratics. In a post-Darwin world, I think we can say that the only constant is change. We don’t need to measure change relative to some eternal form but only compare the present to the past.This does typify honest evolutionism (though not necessary the theory of evolution), but it doesn’t really make sense. If you don’t acknowledge the existence of real distinctions, then everything is the same … i.e. static. Essences must exist for there to be change.
This was the number one topic discussed by the Pre-Socratics (the earliest Greek philosophers in recorded history). And the conclusion was that there must be real distinctions for there to be change … or else change is a mere illusion and reality is completely static.
And yet, no one has ever found this “substance” that properties are thought to adhere to. I don’t see how it means anything to say that it does or does not exist.You see, as Aristotle said (and this makes a lot of sense), everything has a static nature (termed a “substantial form”), as well as changeable attributes (termed “accidental forms”). A deer, for example, has a static form (the form of a deer), as well as changeable attributes (like its posture, colors, actions, etc.). If the substantial form is lost (e.g. if the deer is destroyed), then that thing is no longer the thing that it was … it’s no longer a deer. However, for a deer to be a deer, it has to have a static form as long as the deer exists … because as soon as that substantial form changes … it’s not a deer anymore.
I don’t think that in addition to all the tables in the world, there is a “substantial form” of tableness that all tables need to try to conform to. I never need to ask whether or not my descriptions of tables or anything else is adequate to the essence of unchanging tableness or The-Way-Things-Really-Are but only to ask whether or not I’ve been imaginative enough to come up with better more useful descriptions for whatever my purposes are at the moment or build a better table.Now, since there is this substantial form that exists as long as the thing is the thing that it is, there is thus a consistent standard for that thing. Yet the thing does not always live up to that standard because its accidents (which are changeable but nonetheless a part of the thing) can change and even be in conflict with the right functioning of the substantial form.
Best,
Leela