Quote:
Originally Posted by Subfallen
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But we could also re-write as:[1] X1, X2, ..., Xn-1 are observed evolutionary systems.
[2] Each is known to have been produced/perpetuated by human beings, which have the characteristic property of: being products of an evolutionary system (Darwinian evolution).
[3] Xn is an evolutionary system.
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[4] By induction, Xn was likely to have been produced/perpetuated by beings which: were the product of an evolutionary system (in some sense).
I don't take an issue with this conclusion. However I do think it is possible that people could find valid reasons to reject it which would not apply to my conclusion.
Quote:
Originally Posted by Subfallen
Ok. So, in general, the more the inductive step relies on just the fact that Xn can be described in a similar way to X1,...,Xn-1, then the weaker the argument. (And in this way you are using this argument, the inductive step relies ENTIRELY on the descriptive flexibility of evolutionary theory.)
For a very strong inductive argument, we do not just want to see abstract (descriptive) commonality between Xn and X1,...,Xn-1; rather, we want to to see that Xn is "essentially the same" as X1,...,Xn-1. E.g. all the Xi are swans.
If all X
i where exactly the same my argument wouldn't be inductive but rather deductive. If all evolutionary systems are exactly the same then the argument might go like this.
All true evolutionary systems are the product of intellect.
The evolutionary system identified by Darwin is a true evolutionary system.
Therefore the evolutionary system identified by Darwin is the product of intellect.
The fact that my argument is inductive necessitates that all swans are not identical....or rather...since I acknowledge that all swans are not exactly identical my argument can only be inductive.
It seems to me that your criticism of my argument is that it is inductive and not deductive. It is true that deductive arguments are much stronger than inductive ones. However indutive arguments are still considered valid by most rational people.
You haven't invalidated my argument...all you have done is shown that it is not as strong as a deductive argument and I readily admit that.