Saturday, August 27

Thoughts on the philosophy of science.

According to John Gribbin (https://en.wikipedia.org/wiki/John_Gribbin the era of the scientific age proper took root from the 16th century.

Up until that time philosophy was regarded as science but thereafter they tended to go their separate ways. But the ancients determined long before that many things lie outside physics so they coined the Greek term meta- physics (translated as outside of physics) for discussions reliant on intuition, reasoning and mysticism. There was no burden to determine truth in the scientific way we consider appropriate in modernity.

Hence the ancient pre Hellenic Greek philosophers concluded that there can only be divine truths that are unchangeable and unknowable by humanity. They used metaphor and myth to make sense of their existence. 

This post seeks to talk about the philosophy of science to invite discussions as to how far we should go in placing our faith in science and whether or not meta - physics remains relevant

A pivotal figure ushering in the scientific age

Thomas Bacon introduced the inductive methodology to scientific theory. Previously scientific analysis was limited to the purely deductive mode of reasoning. 

Bacon's approach as the first empiricist might be viewed as a bottom up approach. Think of it as analogous to busy bee observations peering at the activity within the hive to validate a scientific theory pertinent to the phenomenon observed. Hence science expanded under the heading of empiricism. He also maintained some truths as a matter of reason (logical analysis and proof) and others belong to faith and so we can embrace the concept of double truth.  

Bacon also introduced the idea of the Idols of the Tribe, Cave. Marketplace and Theatre. 

Moving into the modern era

The philosophy of science became increasingly involved as to how we see the phenomenal world and the reasoning as to understand it and or justify a particular view. Fields such as psychology and the social sciences increasingly came to rely on scientifically based underpinnings.

But firstly one needs to define the current terms used.   

Theory 

The logical progression of a statement representing a particular view of a subject matter or related phenomenon. Examples are the origins of a particular type of artistic movement or media studies in terms of how it applies in history e.g. Cubism , the body of knowledge that applies to stresses in engineering - the construction of buildings and bridges and so on. In the modern era many theories provide only a skeleton outline whilst others lack any credibility. 

Laws, Hypotheses and Scientism 

Recurring patterns in nature have formed the basis of natural laws which have become absorbed into a scientific law which then provides an explanation-  such as the laws of thermodynamics. 

Hypotheses comprise a logical and feasible explanation but lack the evidentiary validation involving observations and testing. Once the hypothesis can be validated it can be considered a scientific theory.  

During the 19th and 20th centuries, the so-called 'logical positivists', posited science as the only true system of knowledge and regarded metaphysics as redundant since it was unable to be verified.  

Scientific theory 

Hence the generally accepted distinction is it is more carefully constructed and specific to the subject matter. Examples might include the theory on the origins of the species, the behaviours of atomic and subatomic particles or specific brain disorders and so on. For a scientific theory to be acceptable it must be verifiable by observations. But certain philosophers thought it must be more demanding.  

Philosopher Karl Popper (1902-1994) and Physicist Lee Smollin (1955) propose further qualification.   

Popper proposed one should exclude those theories which are irrefutable- e.g. where empirical evidence can’t be refuted. That rules out psychoanalysis and irrefutable empirical data confined to a specific analysis.

His basis was that logically these truths are confined to the data examined and not supportive of an overall theory.

Lee Smolin favoured virtuosity- ‘The Trouble with Physics’, for fundamental physics. 

For Smolin a theory must be both capable of being proven experimentally and also make a new prediction, to provide an answer that disproves the old theory, whilst ensuring the new theory is verifiable. 

Determining the Truth - as pragmatically seen from different contexts.

The question that arises is whether or not it is possible for two opposing views to be true, given they are seen or talked about in different contexts. Pragmatically can we revert to a truth based on the premise a truthful proposition is one whose outcomes can be demonstrated to be so (true) over time within a designated context.

Provisional truths are also universal truths  

For instance the general theory of relativity may one day be proven to be flawed if it was found that objects can routinely exceed the speed of light.

Similarly Darwin’s theory of evolution, doesn’t correlate to rapid cellular development given the immense complexity arising from a set of DNA instructions.   

Furthermore species adaptations can rapidly occur. By way of example Okanee salmon spawning in Canada - this species used to reach the ocean in their life cycle (and were huge), but for decades dams have prevented that - they now live their lives in Kootenay Lake and spawn to their birth-streams in the third year of life - turning from silver to the red and green in a soon-to-spawn-and-die fashion.

In economics, their elegant theories are routinely hijacked by our non-rational human responses.    

In a pure programming experiment physicist Stephen Wolfram- “A New Kind of Science and creator of Mathematica’, carried out thousands of experiments to prove creative patterns kept evolving from simple instructions, only possible in modernity given the use of very powerful computers. Programs replicated simple instructions (cellular data as he called it) which continued to evolve in a changing creative pattern when you would expect to see the same pattern repeated. Those changing patterns continued on over billions of cellular data and gave appearances of plants and other life forms even though the basic instructions remained were repeated.    

The necessity to hold provisional truths to be true to obtain the greatest good

Whilst one acknowledges the provisional nature of scientific truth those engaged won’t be effective unless the supporting empirical evidence is acted upon. For instance a good psychologist has to believe in the empirical data underpinning his profession if he or she is to be positively helpful towards patients just as the same principles apply to most professions. The same principle applies to most professions reliant on validated empirical data. 

Hence, notwithstanding the provisional nature of these truths, they are reliable enough not to invite hesitation and to feel comfortable to try alternatives if one type of treatment is unsuccessful. As far as medical science is concerned you treat the patient first and apply the treatment as a secondary process. This sees medical science more of an art than a science in practice.    

But when it comes down to the more serious medical issues nothing beats hard-nosed science as opposed to naturalism.

Modern day changes in the emphasis of philosophy

Given the undeniable success of modern day sciences beginning with Bacon it is hardly surprising that both a materialistic and fact dependent philosophical movement began to place emphasis on logic. Hence logical form and essences took over in philosophy.  In the form of privileged representations.

So, the use of intuition and concepts have fallen by the wayside in philosophy. 

The modern day appeal of science to reject metaphysics is, amongst other things, principally due to a deemed lack of self-correcting aspect of science. That may be more of a perception than a reality.  

In defence of Meta –physics   

In defending metaphysics one might turn for inspiration to the pre Hellenic Greeks ( like Nietzsche ) who proposed that only the GODs possessed divine truth- considered both unchangeable and unknowable.  From a Theistic perspective one might also believe only absolute Truth with capital T is the province of GOD.  

So that earthly truth could only be tied to mystical experiences and in the interpretations of myths and in storytelling- a feeling to be in harmony with GOD(s) or not evident in your emotions. I think there is an argument to say our ever increasing creative memories remain dependent on the narrative that defines our inescapable sense of self.   

The search for meaning and our curiosity continues to underpin modern day existence, just as we still relish those stories we tell each other to help make sense of our existence. 

Conclusion and questions  

Ultimately science is aiming to find the truth and there are many that believe our faith is well foundered in the evidence based criteria and there is no room for any other methodology signalling the death of meta-physics.     

1.       So my question is: Is metaphysics no longer of any use in modernity? 

2.       Do you believe science is a totally rational science? 

3.       Is pure observation really possible? 

4.       Will the social sciences survive into the future to remain as sciences?  

5.       Can idols of the mind intrude into scientific thinking? 

6.       Do some scientists have such an emotional investment in their theories their desire will be to protect their reputations above anything else?   

7.       Are some truths a matter of reason (logical analysis and proof) and others of faith? Or should all truths be subject to the same standard? 

8.       Is it true there is a necessity to hold provisional truths to be true to obtain the greatest good?   

9.       Do you agree with the proposal by Karl Popper to exclude the social sciences and empiricism based theories from scientific theories? 

10.   Can we accept a pragmatic concept of truth – does it hold any merit? 

11.   Should we limit ourselves to just science?  

 

You are invited to provide answers to any of these questions which will be greatly appreciated. 

 

5 comments:

Tom said...

Hi Lindsay,

I do not wish to get too drawn into this, interesting as is the subject. So I will give some off-the-cuff, instinctive responses to your questions.

Q1: I think metaphysics is as, if not more, important now than it has ever been.
Q2: No.
Q3: No.
Q4: Were they ever sciences?
Q5: Yes.
Q6: Yes.
Hi Lindsay,

I do not wish to get too drawn into this, interesting as is the subject. So I will give some off-the-cuff, instinctive responses to your questions.

Q1: I think metaphysics is as, if not more, important now than it has ever been.
Q2: No.
Q3: No.
Q4: Were they ever sciences?
Q5: Yes.
Q6: Yes.
Q7: I think analysis, proof, use of faith, are tools in the search for truth --- whatever truth is. I do not think that any of these tools are necessarily "pure." They may, subconsciously perhaps, be affected by other tools.
Q8: This question is a little confusing. I believe that, unless one is prepared to wait until all the evidence is available (like, never!) one does the best one can; see whether it works. But above all, 'do no harm.'
Q9: Do I believe in rejecting some tools? No. One must always be aware, however, of their appropriate use, or otherwise. Social sciences? See Q4.
Q10: I think I answered this in Q8.
Q11: Can we define what science is, exactly? More generally, why place any limitations on our researches? Be aware of what one is doing; determine whether the method is appropriate; don't close the mind to anything.

Now do what I intend to do now; go out into the garden and have a nice glass of wine and some nibbles. :)

Tom said...

Hi Lindsay,

Seem to have demonstrated a touch of finger trouble. Should have checked before sending.

All the best, Tom (Was the wine good?)

Lindsay Byrnes said...

Many thanks Tom for your responses. To begin where you left off, I inadvertently omitted my definition of science. I would be very interested to hear what you think about it ? I struggled with a definition as there doesn’t seem to be any one overarching methodology given the complex nature of science today. I did have just one glass of wine with some friends beforehand and later posted my notes to overlook the definition I had added in on the bottom.

Here it is: you might say modern science is no more than the equivalent of sophisticated philosophy, formulated from carefully constructed theories that have been validated by observations and or testing and whose work is usually subject to confirmatory peer reviews. That is the convention to require a process of peer reviews and collaboration additional to the testing and or observations before new advancements are accepted into the mainstream of scientific knowledge. But mostly science might be described as representing the work of ordinary people who painstakingly evaluations in various fields contributes to incremental gains which either aids society or enhances our understanding of the world we inhabit.

I agree with your note about the confusion but you have nevertheless answered the question as expected. My main thrust is I concur metaphysics is even more important in modernity than in the past. One final question to you about not causing harm: where cutting edge new research could lead to unintended consequences, which can’t be ascertained, how does one decide what’s ethical or not? Would one refrain from further work until the science is better understood?
Best wishes

Tom said...

I agree with your opening comment on the definition of science. For my part, I would say that the 'hard sciences' --- physics, mathematics, chemistry (there may be others but my knowledge of them is insufficient for inclusion here) can be distinguished from the 'soft' or social sciences by their relative levels of mathematical predictability. The action of an apple leaving a tree can be predicted with a very high degree of probability. On the other hand, the response of a human 'society' (of any size) to a given set of circumstances is not predictable to the same, and therefore much lower, degree of probability. (How would one mathematically formulate a law of sheer cussedness for the Brexit referendum, for example --- as being only one factor in that exercise?)

Of course, at the quantum level, the predictability of an individual particle may well be impossible to calculate, even though the overall effect of a population of particles can be predicted very accurately. Further, the behaviour of an atom can be predicted very accurately in a chemical reaction, even though the use of the Bohr atom model may be used. And we know that atoms are not really built as Bohr said. It's just that that model is highly predictive. So where lies truth in this instance?

As to your final question, I think it could reasonably be concluded that all cutting edge new research can lead to unintended consequences. But here we are moving out of the fields of pure sciences and into the fields of applied sciences and technologies. Ethics, of course, are not sciences; different considerations come into play. I don't know how one decides what is, and what is not, ethical. Very often, it is the 'further work' which helps us to better understand the science. So, no, I would not refrain from further work --- unless there were other more important (ethical, political etc. ?) reasons for discontinuing.

As a footnote, one should beware of calling a subject scientific, or ethical, or whatever, simply to give the subject more street cred, gravitas, or assumed legitimacy. That would be most unscientific! or even, perhaps, unethical!

Lindsay Byrnes said...

Many thanks Tom. Its always great to get your well considered perspectives combined with rather obviously with first hand experience. Best wishes