Register | Sign In


Understanding through Discussion


EvC Forum active members: 63 (9162 total)
4 online now:
Newest Member: popoi
Post Volume: Total: 916,356 Year: 3,613/9,624 Month: 484/974 Week: 97/276 Day: 25/23 Hour: 0/0


Thread  Details

Email This Thread
Newer Topic | Older Topic
  
Author Topic:   Induction and Science
Straggler
Member
Posts: 10333
From: London England
Joined: 09-30-2006


Message 668 of 744 (593620)
11-28-2010 6:00 AM
Reply to: Message 665 by RAZD
11-27-2010 11:22 PM


Re: induction vs deduction elements
RAZD writes:
You are correct, I should have said that we conclude that all tested A is B.
Then you haven't deduced anything. You have simply gone in a circle and ended up back where you started. I.e. with your observation that all thus far observed instanced of A are B.
RAZD writes:
The deductive part is the confirmation of the foundational evidence for an hypothesis being consistent with the hypothesis.
It would be a very crap hypothesis if it wasn'y even in accordance with the evidence from which is was founded wouldn't it?
RAZD writes:
From there you make inductive guesses on what testing will show.
Our inductive "guesses" reliably (but tentativley - i.e. without absolute certainty) tell us that the laws of thermodynamics are universal and that perpetual motion machines are impossible.
Do you really think this is a guess?

This message is a reply to:
 Message 665 by RAZD, posted 11-27-2010 11:22 PM RAZD has replied

Replies to this message:
 Message 669 by RAZD, posted 11-28-2010 8:40 AM Straggler has replied

  
Straggler
Member
Posts: 10333
From: London England
Joined: 09-30-2006


Message 671 of 744 (593644)
11-28-2010 9:44 AM
Reply to: Message 669 by RAZD
11-28-2010 8:40 AM


Re: induction vs deduction elements
RAZD writes:
All tested A is B
IF this pattern holds for all A
THEN all A is B
Test to see if the pattern holds.
If A is found that is notB then P2 is false and the conclusion is falsified, by deductive logic.
And if it isn't falsified after a great deal of testing? Can we at any point inductively (but tentativley) conclude that all A is B with confidence?
For example can we confidently (but tentatively) conclude that there is no such thing as a perpetual motion machine?
RAZD writes:
Do you know the difference between "best (or educated) guess" and just "guess"? Or do you think this is "just a theory"?
It was you that used the phrase "inductive guess". The question is do you understand that universal principles and scientific conclusions (such as that ALL species on Earth are derived from a common ancestor) no matter how well tested are necessarily inductive to some degree?
Panda writes:
By definition: you cannot make general/universal rules/laws using deductive reasoning.
Do you disagree with the above?
AbE - I think that your position on inductive reasoning (whether you yet realise it or not) lies at the heart of Mod's accusation that by the terms of your argument "Science is pseudoskeptical" Message 498
Edited by Straggler, : No reason given.

This message is a reply to:
 Message 669 by RAZD, posted 11-28-2010 8:40 AM RAZD has replied

Replies to this message:
 Message 672 by RAZD, posted 11-28-2010 1:59 PM Straggler has replied

  
Straggler
Member
Posts: 10333
From: London England
Joined: 09-30-2006


Message 686 of 744 (593787)
11-29-2010 1:19 PM
Reply to: Message 672 by RAZD
11-28-2010 1:59 PM


Pseudoskeptic Science?
RAZD writes:
Yes you can reach a high degree of confidence that a theory is (tentatively) correct, but you cannot make the final claim that it is true.
Excellent.
So do you agree that scientific theories, even the most highly tested of theories, which make universal or general statements are tentative conclusions derived (at least in part) from inductive reasoning as opposed to statements of logical certitude?
Do you agree that high confidence yet tentative and falsifiable theories can be derived by incorporating such methods into one's investigations and resulting conclusions?
Conclusions like that being discussed in the bluegenes Challenge (bluegenes and RAZD only)Great Debate[/bgcolor] the bluegenes Challenge

This message is a reply to:
 Message 672 by RAZD, posted 11-28-2010 1:59 PM RAZD has seen this message but not replied

  
Straggler
Member
Posts: 10333
From: London England
Joined: 09-30-2006


Message 689 of 744 (593797)
11-29-2010 2:37 PM
Reply to: Message 688 by nwr
11-29-2010 2:22 PM


Everyone But You.......
If I put a piece of potassium in a glass of water what does science tell us will happen?
Nwr writes:
You, like the other participants, have ignored it.
I refer you to Message 642. You remain refuted.
Nwr writes:
I have been presenting a position throughout the discussion.
You have presented nothing that is able to explain the fact that science can and does make reliable and accurate (albeit tentative) conclusions about specific as yet unobserved events without invoking induction in the form of basing such conclusions on the uniformity of nature and past observations.
Nwr writes:
Apparently, you are unable to see it.
That you think you have succeeded where Popper and numerous other philosophers of significance have failed is laughable.
So Nwr what broad and meaningless philosophical label are you going to apply to yourself today? Before rapidly backtracking on anything concrete that this position will imply. As per your usual tactic of vagueness, ambiguity, vacuousness and general pseudo-intellectual philos-obabble.

This message is a reply to:
 Message 688 by nwr, posted 11-29-2010 2:22 PM nwr has replied

Replies to this message:
 Message 690 by nwr, posted 11-29-2010 2:55 PM Straggler has replied

  
Straggler
Member
Posts: 10333
From: London England
Joined: 09-30-2006


Message 692 of 744 (593808)
11-29-2010 5:23 PM
Reply to: Message 690 by nwr
11-29-2010 2:55 PM


Re: Everyone But You.......
Nwr writes:
Straggler writes:
If I put a piece of potassium in a glass of water what does science tell us will happen?
Completely off topic for this thread, so I shall continue to ignore it.
Your false description of science makes it impossible for science to answer this question beyond "guessing" or "opinion". Yet you will find the answer to this question clearly stated in any school level chemistry text book.
So now you have resorted to "Off topic" as a method of avoiding the questions that make your position so untenable that even you might be forced to recognise it's deficiencies.
Nwr writes:
Straggler writes:
I refer you to Message 642. You remain refuted.
I was not refuted there, nor elsewhere.
Oh really? Are you referring to your vague, ambiguous and rather meaningless metaphor for scientific theories as scaffolding? Message 480
Or are you referring to your relentless retreat from initially claiming that science doesn't use induction to your position now which demands that it be logically proven that scientific principles cannot be derived any other way?
Nwr writes:
I am still waiting for the proof that they can be derived by no method other than inductive reasoning. Message 635
When all else fails simply cry "but you cannot prove it" huh? And then you have the gall to tell others that they are exhibiting creo style behaviour.
Incredible.
Edited by Straggler, : No reason given.
Edited by Straggler, : No reason given.

This message is a reply to:
 Message 690 by nwr, posted 11-29-2010 2:55 PM nwr has seen this message but not replied

  
Straggler
Member
Posts: 10333
From: London England
Joined: 09-30-2006


Message 694 of 744 (593822)
11-29-2010 6:34 PM
Reply to: Message 693 by nwr
11-29-2010 6:05 PM


Re: What would induction in science look like
Nwr in the OP writes:
Why do people still cling to the myth that science uses induction? Why is there an appearance that induction seems to work, and why are people misled by this appearance?
It has been demonstrated to you that science does use induction. It has been demonstrated to you that deductive logic is unable to derive universal laws and principles of the sort science indisputably concludes. It has been demonstrated to you that philosophers of the significance of Popper have tried to eliminate induction from science because it is not an intellectually satisfying or concrete method of drawing conclusions. It has been demonstrated to you that these attempts have failed. It has been demonstrated to you that your own confused, contradictory and ambiguous mutterings result in a description of science that denies science the ability to draw reliable and accurate (albeit tenative) conclusions about the future behaviour of specific aspects of nature. It has been demonstrated to you that despite your assertions that such conclusions are "guesses" or personal "opinions" science can and does draw such conclusions. It has been demonstrated to you that science does indeed utilises inductive reasoning in it's methods and that it does so to great practical effect.
In short you have been refuted.
Nwr writes:
I recognize that I have not been a successful communicator on this topic.

This message is a reply to:
 Message 693 by nwr, posted 11-29-2010 6:05 PM nwr has seen this message but not replied

  
Straggler
Member
Posts: 10333
From: London England
Joined: 09-30-2006


Message 698 of 744 (593881)
11-30-2010 6:19 AM
Reply to: Message 696 by RAZD
11-29-2010 9:21 PM


Re: induction vs deduction elements
Double post. See below.
Edited by Straggler, : No reason given.

This message is a reply to:
 Message 696 by RAZD, posted 11-29-2010 9:21 PM RAZD has seen this message but not replied

  
Straggler
Member
Posts: 10333
From: London England
Joined: 09-30-2006


Message 699 of 744 (593882)
11-30-2010 6:20 AM
Reply to: Message 696 by RAZD
11-29-2010 9:21 PM


Re: induction vs deduction elements
RAZD writes:
As I see it, there are both deductive and inductive elements involved in the scientific process.....
In this regard you have come to the same conclusion as everyone except Nwr in this thread. Even Jon got there in the end.
But the question remains - Do you accept that ALL scientific theories, even the most highly tested of theories, which make universal or general statements are tentative conclusions derived (at least in part) from inductive reasoning as opposed to statements of logical certitude?
Do you agree that high confidence yet tentative and falsifiable theories can be derived by incorporating such inductive methods into one's investigations and resulting conclusions?
RAZD writes:
But a high degree of confidence that all A is B, does not mean that it is highly likely that all A is B
If I was asked whether or not a perpetual motion machine exists I would give the answer (based on the evidence) "Almost certainly not".
Are you saying that this answer is unjustified? And what answer would you give to that question bearing in mind that certainty is not an option with regard to scientific universal principles.
Edited by Straggler, : No reason given.

This message is a reply to:
 Message 696 by RAZD, posted 11-29-2010 9:21 PM RAZD has seen this message but not replied

  
Straggler
Member
Posts: 10333
From: London England
Joined: 09-30-2006


Message 700 of 744 (593885)
11-30-2010 7:01 AM
Reply to: Message 697 by nwr
11-29-2010 11:04 PM


Re: What would induction in science look like
Do you really think that you have succeeded where Hume, Popper et al have failed? Are you not swayed at all by the arguments of those practicing scientists who have taken part in this thread and who have described their methods as incorporating inductive reasoning?
Nwr writes:
However, no such thing has been demonstrated.
To quote you "Apparently, you are unable to see it."
Nwr writes:
That you present wishy washy non-demonstrative arguments, and claim that they are demonstrations - well that's a problem.
The irony of you making this statement will no doubt also be lost on you......

This message is a reply to:
 Message 697 by nwr, posted 11-29-2010 11:04 PM nwr has seen this message but not replied

  
Straggler
Member
Posts: 10333
From: London England
Joined: 09-30-2006


Message 702 of 744 (593929)
11-30-2010 12:55 PM
Reply to: Message 701 by New Cat's Eye
11-30-2010 10:35 AM


Re: induction vs deduction elements
So Newtons second law is unfalsifiable as far as you are concerned?

This message is a reply to:
 Message 701 by New Cat's Eye, posted 11-30-2010 10:35 AM New Cat's Eye has replied

Replies to this message:
 Message 703 by New Cat's Eye, posted 11-30-2010 2:46 PM Straggler has replied

  
Straggler
Member
Posts: 10333
From: London England
Joined: 09-30-2006


Message 711 of 744 (594007)
12-01-2010 6:25 AM
Reply to: Message 703 by New Cat's Eye
11-30-2010 2:46 PM


Truth By Definition
CS writes:
I brought up the law "F = m*a" earlier so lets just use that again. I see laws like this as descriptive definition rather than an explanatory theory. I don't think it really relies on induction and that it can be said to be true/fact. I mean, F cannot be anything other than m*a.
So yeah, theories that are laws can possibly be said to be true/fact.
Straggler writes:
So Newtons second law is unfalsifiable as far as you are concerned?
CS writes:
No, theoretically it could be falsified.
Then it cannot be something that is true simply by definition as you previously asserted can it?
CS writes:
But F cannot be anything other than m*a, otherwise it wouldn't be F. That's what "=" means.
Except when it's not.
Wiki writes:
Newton's second law requires modification if the effects of special relativity are to be taken into account, because at high speeds the approximation that momentum is the product of rest mass and velocity is not accurate.
Or as you so eloquently put it:
CS writes:
Besides, doesn't Special Relativity muck it up?
Netwon's laws apply to inertial frames. They are exceptionally good approximations to almost all practically encountered situations.
But the fact that they are not true by virtue of simply being defined to be so rather mucks up your point doesn't it?

This message is a reply to:
 Message 703 by New Cat's Eye, posted 11-30-2010 2:46 PM New Cat's Eye has replied

Replies to this message:
 Message 713 by New Cat's Eye, posted 12-01-2010 9:51 AM Straggler has replied

  
Straggler
Member
Posts: 10333
From: London England
Joined: 09-30-2006


Message 712 of 744 (594008)
12-01-2010 6:57 AM
Reply to: Message 709 by nwr
11-30-2010 8:22 PM


Re: Try attacking inductive reasoning in science without using it.
Nwr writes:
The reason to doubt induction is there in the text I quoted from SEP, in Message 600.
Nwr writes:
I'll agree that Popper's claim to having solved the induction problem rests on his falsification thesis. But his claim that scientists don't actually use induction does not rely on falsification. Message 633
So you agree that Poppers claim to have solved the induction problem failed. Yet in your last post to Crashfrog you are once again citing Popper's argument as the solution to the problem of induction.
Are you stupid? Or have you changed your mind on something since then?
Edited by Straggler, : Fix message links

This message is a reply to:
 Message 709 by nwr, posted 11-30-2010 8:22 PM nwr has seen this message but not replied

  
Straggler
Member
Posts: 10333
From: London England
Joined: 09-30-2006


Message 715 of 744 (594059)
12-01-2010 12:52 PM
Reply to: Message 713 by New Cat's Eye
12-01-2010 9:51 AM


Re: Truth By Definition
CS writes:
But then, if F=ma is not true, doesn't your point about the inductive applications of it also fail?
No. Because it's limitations are considered by science to be as universal as the law itself. We wouldn't say that the second law of thermodynamics is not a universal principle in science because it is limited to closed systems would we?
CS writes:
Regardless, isn't it still a decent example of a way that science can yield theories without needing induction?
As long as we are applying laws such as the one in question to specific as yet unobserved situations and expecting nature to operate in accordance with these laws we are doing so on the basis of inductively concluding the uniformity of nature.

This message is a reply to:
 Message 713 by New Cat's Eye, posted 12-01-2010 9:51 AM New Cat's Eye has replied

Replies to this message:
 Message 718 by New Cat's Eye, posted 12-01-2010 2:52 PM Straggler has replied

  
Straggler
Member
Posts: 10333
From: London England
Joined: 09-30-2006


Message 716 of 744 (594061)
12-01-2010 12:59 PM
Reply to: Message 714 by Jon
12-01-2010 10:12 AM


Re: Nope... That's not the Point Either
So you cannot reconcile your original position with your latest one then. Didn't think so.
If I throw a stick will you just go away?

This message is a reply to:
 Message 714 by Jon, posted 12-01-2010 10:12 AM Jon has replied

Replies to this message:
 Message 727 by Jon, posted 12-01-2010 9:05 PM Straggler has not replied

  
Straggler
Member
Posts: 10333
From: London England
Joined: 09-30-2006


Message 717 of 744 (594069)
12-01-2010 2:40 PM
Reply to: Message 709 by nwr
11-30-2010 8:22 PM


Why You Are Wrong
Let me be more explicit about the deficiencies in your position.
You advocate Popper’s view of non-inductive science but without the key feature of his thesis required to overcome the need for induction. You advocate instrumentalism without the key tenet of instrumentalism which is that a theory should be judged solely on it's ability to accurately and reliably predict the behaviour of nature in a way that is useful
The failure of your position is derived from the fact that by picking and choosing disparate elements of different philosophical positions which you think support your false view of science you end up with a description of science that cannot in any way account for the ability of science to do the things it demonstrably does very adeptly. You are left only with guesses and opinions (to use your nomenclature) regarding the future behaviour of natural phenomena.
If I put a piece of potassium in a glass of water what does science tell us will happen?
Nwr writes:
Straggler writes:
Can science reliably and accurately make conclusions about things which have not yet occurred based on the principles derived from what has gone before?
No.
But science can and does do this very effectively. And this is why the description of science you are advocating continues to be refuted.

This message is a reply to:
 Message 709 by nwr, posted 11-30-2010 8:22 PM nwr has replied

Replies to this message:
 Message 720 by nwr, posted 12-01-2010 3:48 PM Straggler has replied

  
Newer Topic | Older Topic
Jump to:


Copyright 2001-2023 by EvC Forum, All Rights Reserved

™ Version 4.2
Innovative software from Qwixotic © 2024