I'm referring to this page as a primary source of information.
I don't get what Artistotle wants to show here. Or I didn't get the main idea he wanted to express. Let's take another example from those on the Wikipedia page. According to Aristotle cause the following statement is true :
"My glass marble is now an iron marble, it's the same."
Because everything is the same except the material. (Iron vs Glass)
- The design is the same : It's a marble
- The final cause is still the same : I want to play marbles.
That doesn't seem right to me because there is one thing this theory doesn't cover. How can this iron marble the same than my glass marble ? It doesn't even have the same physical properties (weight for instance...). Though only the material changed. It would be the same with the sock example. If there is a hole in my whool sock and I cover it with a silk patch and I repeat this operation a countless number of time. That will still be my sock but it won't be a whool sock but a silk sock (I admit it, it might not be comfy).
Did someone understand what is this "material change" Aristotle is talking about ? The material may vary if it's only the same 'type' of material ?
Or maybe my english is too bad and I don't know what defines the word "material".