learningphysics,
article said:
The conclusion seems inescapable: Every inductive argument employs UN as a premise, so no inductive argument can ever justify UN.
The author doesn't say what "justify" means (unless I missed it, and I double-checked), so I can't agree with this. But, yes, I agree regarding the circularity of such an argument.
We accept UN, the claim that our experience is a representative sample of the natural world.
Unless the author means "we" as the person in the example, this is a delightful bit of irony. (At first, I thought the author meant we as "all people".)
It could be that there are two sorts of snow, the cold kind and the warm kind, but that the warm kind only exists on mars.
This actually also points out related problems with
D: In our extensive experience thus far, snow has always been cold.
1) If we define snow as being cold, a substance which isn't cold isn't snow. 2) The author has failed to mention different kinds of properties (color, texture, taste, plasticity, temperature, etc.) and types of sensory information (photic, chemical, mechanical, and thermal). How do we identify snow, or what we suspect is snow, in the first place? Anyway...
Our acceptance of UN* is not optional. It is, in Hume's phrase, a matter of custom or habit; but it might better be called a matter of instinct. We do not reason our way to the principle: we do not accept it on the basis of arguments. Rather, to accept the principle is a natural feature of all human and indeed all animal life.
*(UN) For the most part, if a regularity R (e.g., All Fs are Gs) holds in my experience, then it holds in nature generally, or at least in the next instance.
Yay, I get to enjoy the irony after all! The author is explaining the problem of induction and argues (partially through Hume) "In our extensive experience thus far, all humans & co. have always accepted X. Therefore, all humans & co. accept X. Furthermore, I can experience the basis on which all humans & co. accept X."
But wherever it comes from, it is so deeply engrained in us that we have no real choice about whether to accept it. We can temporarily suspend our intellectual assent to the proposition. But nature will soon reassert itself in us and force these doubts from our mind.
Same as above.
He [Hume] has shown that from a strictly intellectual point of view, there is no real difference between common sense and science on the one hand, and religious belief on the other. In all three cases we find a system of belief based on a fundamental conviction that cannot be justified by argument. The most dramatic way to put the point is to say that Hume has shown that common sense and science are matters of faith.
BTW I actually like Hume and James. Apparently the author equates acceptance with belief. BTW This means all animal life is capable of belief (faith, conviction), by the author's prior statements.
I would define acceptance, as it is used throughout this article, thus: A accepts B if
1) A behaves as if B were true or
2) A assumes B is true or
3) A believes B is true.
1 is there for several reasons, but basically because I can observe behavior. If you don't understand why 2 is there, I'll try to explain it, but I think previous posts already have.
I'm not sure why "for the most part" is included (to what does it refer?) in the author's statement of UN? It's no small matter either- it's the difference between some and all!
I have more to say on this topic, but I'll wait until we are clear on these points to proceed.