MugaSofer comments on Wrong Questions - Less Wrong

34 Post author: Eliezer_Yudkowsky 08 March 2008 05:11PM

You are viewing a comment permalink. View the original post to see all comments and the full post content.

Comments (126)

Sort By: Old

You are viewing a single comment's thread. Show more comments above.

Comment author: MugaSofer 14 April 2013 04:31:17PM -2 points [-]

"What is the First Cause?" is not the same question as "Why is there anything?". An infinite string would answer the former, not the latter.

Comment author: satt 14 April 2013 05:31:03PM *  2 points [-]

"What is the First Cause?" is not the same question as "Why is there anything?".

This is true in the absence of further assumptions. But once you or I assume Maitzen's argument is true (and I think we both do) the second becomes a mere instantiation of the first.

An infinite string would answer the former, not the latter.

This is false if Maitzen's argument is true. Conditional on Maitzen's argument, an infinite string answers the former and hence the latter. I could justify this by repeating what I've written in my two comments upthread, but it might be more productive if I give a different argument.

How do we usually answer "Why is there X?"? I think we usually pick out X's most salient cause. "Why is there an ambulance outside my neighbour's house?" "Because the neighbour had a heart attack." We're basically saying, "here's the most interesting antecedent node in the causal graph, and had we deleted or substantially altered it, there wouldn't have been X". If we'd deleted the "neighbour's heart attack" node, there wouldn't be an "ambulance outside neighbour's house" node.

This gives me a way to interpret "What's the First Cause?", or "Why is there anything?", or "Why is there everything?", or "Why isn't the universe in the counterfactual no-turtle state?" (to paraphrase you). These questions are asking for a node in the causal graph that's antecedent to everything. But how can I do that if the causal graph is an infinitely long string? There's no such node!

Comment author: PrawnOfFate 14 April 2013 06:02:48PM *  1 point [-]

There is still the question of why there is an infinitely long string.

Comment author: satt 14 April 2013 09:41:46PM 1 point [-]

That question fails in the same way as the others. It's asking for a causal node which, if altered or deleted, would turn the infinite string of causal nodes into a finite one. But no node in an infinitely long string has that power, so the question's implicit assumption is false.

Comment author: PrawnOfFate 14 April 2013 11:06:14PM 2 points [-]

A why question has more possible anwers than efficient causality.

Comment author: satt 14 April 2013 11:49:24PM 0 points [-]

This might be true of "Why" questions in general but I'm talking about the more specific class of questions that start "Why is there". Can you think of examples of the latter that have a sensible answer that isn't a salient cause?

Comment author: PrawnOfFate 15 April 2013 10:13:41AM 1 point [-]

Sure. "Why are there airbags in cars" is answered with "to protect the occupants". it would be inane to give a a causal answer, such as "because someone fitted airbags".

Comment author: ArisKatsaris 15 April 2013 11:26:48AM 1 point [-]

"Why are there airbags in cars" is answered wit "to protect the occupants". it would be inane to give a a causal answer, such as "because someone fitted airbags".

"to protect the occupants" is merely syntactically simpler than "because of the builder's desire to protect the occupants." -- the two statements equally well indicate causality.

Comment author: MugaSofer 15 April 2013 11:36:55AM -2 points [-]

To be fair, this could be phrased as "because someone decided they were the best way to protect the occupants, and fitted them." However, I would define an answer to a "why is there" question more broadly - what explains why the universe is not in the counterfactual situation of this not being there? If you count any causal antecedent as an answer, you can't explain causal loops, and you can only explain parts of infinite chains, not the whole.

Comment author: satt 16 April 2013 09:16:59AM *  0 points [-]

I would define an answer to a "why is there" question more broadly - what explains why the universe is not in the counterfactual situation of this not being there? If you count any causal antecedent as an answer, you can't explain causal loops, and you can only explain parts of infinite chains, not the whole.

I agree with you about this. (And also agree with you & ArisKatsaris's response to PrawnOfFate's airbag example.) I suspect we just differ in our reactions to this inability to explain: you think it's a bug while I think it's expected behaviour.

Any causal chain eventually has to (1) end, (2) loop back on itself, or (3) go on forever without looping. So it's inevitable that if I try to locate the universe's cause, I'll get a counterintuitive answer. I'll find that it either just sprang into existence without being caused, that it caused itself, or that there's a never-ending procession of turtles.

None of these feel like Real Explanations, but (at least?) one of them must be the case. So I already know, a priori, that the universe's causal chain has no Real Explanation. If I think one exists, that just means I've failed to notice my confusion. Asking "Why is there everything?" and its equivalents is a failure to notice confusion.

Comment author: PrawnOfFate 16 April 2013 01:54:05PM 1 point [-]

What do you think you are confused about? You have grounds for thinking the question has no answer, but those are not per se grounds for thinking there was never a question.

Comment author: TsviBT 16 April 2013 08:55:28PM 1 point [-]

By time you are saying things like "Well I'm confused, but... ...and therefore, it must be the case that A, B, or C", you should worry that you have already baked your confusion into your formulation of the question.

Comment author: MugaSofer 19 April 2013 01:46:18PM *  -2 points [-]

None of these feel like Real Explanations, but (at least?) one of them must be the case.

Or there could be a fourth explanation neither of us has thought of.

Comment author: PrawnOfFate 16 April 2013 01:51:45PM 1 point [-]

The paraphrase introduces some efficient causality without removing all the teleology.

what explains why the universe is not in the counterfactual situation of this not being there? If you count any causal antecedent as an answer, you can't explain causal loops, and you can only explain parts of infinite chains, not the whole.

The point I was making is that a preceding cause is not the only kind of answer to a "why" question.

Comment author: satt 16 April 2013 08:13:20PM 1 point [-]

The paraphrase introduces some efficient causality without removing all the teleology.

I'd say the causality was there all along and MugaSofer & ArisKatsaris just made it explicit. Causality can become teleology by operating through a mind, but it remains causal for all that.

Comment author: MugaSofer 15 April 2013 11:32:50AM *  -1 points [-]

But once you or I assume Maitzen's argument is true (and I think we both do) the second becomes a mere instantiation of the first.

Sorry, which argument is this? He makes several.

Comment author: satt 16 April 2013 08:07:09AM *  0 points [-]

The argument that once the elements in the string are individually explained, the string as a whole is explained.

Edit: maybe I should call it the Hume-Edwards principle instead.

Comment author: MugaSofer 19 April 2013 02:03:33PM -2 points [-]

Ah. Well, I agree with it in principle; I just think he misapplies it.