Assignment Question
There are many opposing positions in contemporary philosophy of science. We have read many in recent weeks (Realists vs. Anti-Realists/Instrumentalists, Naturalism vs. Anti-Naturalism, Reductionism vs. Emergence/Complexity, etc.). Select two philosophies opposed to each other and explain each of them. Next, compare and contrast the positions with each other, noting the potential strengths and weaknesses of each relative to the other. Finally, argue which philosophy/position presents the most logically convincing account and defend your conclusion. Use the following readings below to for proof or to support the argument presented. Please let me know if you have any questions.
Answer
Introduction
Contemporary philosophy of science is characterized by a rich tapestry of opposing positions and debates. Among these debates, one of the most enduring is the clash between realism and anti-realism. Realism asserts the existence of an objective reality independent of human observation, while anti-realism questions the extent to which we can know or access such a reality. This essay explores the philosophy of realism and anti-realism in the context of contemporary philosophy of science. Additionally, it delves into the strengths and weaknesses of both positions, ultimately arguing that realism provides a more logically convincing account.
Realism
Realism in philosophy of science asserts that there is an objective reality that exists independently of human observation or perception (Worrall, 2018). It holds that scientific theories aim to describe this objective reality as accurately as possible. According to scientific realists, the success of scientific theories in making accurate predictions and explanations is evidence that these theories capture aspects of an external, mind-independent reality (Psillos, 2018). Realists also emphasize the cumulative nature of scientific knowledge, believing that each scientific theory builds upon the previous ones, gradually uncovering more of the objective reality.
Key Tenets of Scientific Realism
Scientific realism is a multifaceted philosophy with several key tenets:
Existence of an Objective Reality: Scientific realists posit that an objective reality exists independently of human observation or theorizing. This reality includes both observable and unobservable entities, such as subatomic particles or distant galaxies (Psillos, 2018).
Theoretical Truth: Realists argue that scientific theories aim to provide true descriptions of this objective reality. In other words, they believe that the propositions and entities posited by scientific theories correspond to actual features of the external world (Boyd, 2018).
Success and Progress: Realists contend that the empirical success of scientific theories—meaning their ability to make accurate predictions and explanations—is evidence that these theories are capturing aspects of the objective reality. They see scientific progress as a process of steadily approaching a more accurate understanding of this reality (Worrall, 2018).
Richard Boyd’s “Scientific Realism as Inference to the Best Explanation”
One prominent advocate of scientific realism is Richard Boyd, who argues for a position known as “scientific realism as inference to the best explanation” (Boyd, 2018). According to Boyd, scientific theories should be accepted if they provide the best explanations for observable phenomena. In essence, scientific realism argues that science is in the business of discovering truths about the external world.
Anti-Realism
Anti-realism, on the other hand, is a diverse category that includes various positions challenging the realist’s claim of an objective reality. One well-known form of anti-realism is instrumentalism, which asserts that scientific theories are merely tools or instruments for making predictions and organizing observations (Fine, 2018). Instrumentalists argue that scientific theories need not refer to an external reality but should be judged solely by their predictive success.
Key Tenets of Instrumentalism
Instrumentalism is characterized by several key tenets:
Epistemic Pragmatism: Instrumentalists take an epistemically pragmatic stance, emphasizing the utility of scientific theories for making predictions and organizing data. They argue that theories should be evaluated based on their instrumental value rather than their correspondence to an external reality (Fine, 2018).
Anti-Realism about Unobservable Entities: Instrumentalists typically reject the existence of unobservable entities posited by scientific theories. For example, they might view concepts like electrons or quarks as convenient fictions rather than real entities (Fine, 2018).
Bas van Fraassen’s “Constructive Empiricism”
Another form of anti-realism is constructive empiricism, championed by Bas van Fraassen (2018). Constructive empiricists accept the empirical success of scientific theories but deny that they provide access to an underlying reality. According to this view, scientific theories should be regarded as empirically adequate if they accurately represent observable phenomena, regardless of whether they correspond to an external reality.
Comparison and Contrast
Realism and anti-realism are diametrically opposed positions in the philosophy of science. They differ in several key aspects, which we will explore to compare and contrast their strengths and weaknesses.
Epistemic Commitments
Realism: Realism makes strong epistemic commitments by asserting the existence of an external reality that science aims to uncover. It argues that scientific theories provide true descriptions of this reality (Psillos, 2018).
Anti-Realism: Anti-realist positions like instrumentalism and constructive empiricism adopt more modest epistemic commitments. They focus on the empirical success of theories without making claims about the truth or existence of unobservable entities (van Fraassen, 2018).
Scientific Progress
Realism: Realists argue that scientific progress is possible because theories accumulate truths about the external world. Each new theory builds upon the knowledge gained from previous ones, leading to a deeper understanding of reality (Boyd, 2018).
Anti-Realism: Anti-realists, particularly instrumentalists, view scientific progress primarily in terms of increased predictive success. They do not see it as necessarily leading to a better understanding of the underlying reality.
Underdetermination
Realism: Realists face the challenge of underdetermination, where multiple theories can equally explain the same empirical data. Critics argue that this raises doubts about whether realism is justified (Psillos, 2018).
Anti-Realism: Anti-realists, especially constructive empiricists, are less concerned with underdetermination because they focus on empirical adequacy rather than truth. They argue that as long as a theory accurately represents observable phenomena, it is acceptable.
Observational vs. Unobservable Entities
Realism: Realists accept the existence of unobservable entities posited by scientific theories, such as electrons or quarks, as real entities that exist independently of human observation (Boyd, 2018).
Anti-Realism: Anti-realists, like van Fraassen, reject the belief in unobservable entities as real. They consider these entities as convenient fictions or placeholders for empirical regularities (van Fraassen, 2018).
Strengths and Weaknesses
Realism and anti-realism each have strengths and weaknesses that contribute to the ongoing debate in philosophy of science.
Strengths of Scientific Realism
Coherent Explanation of Scientific Success: Realism provides a coherent explanation for the remarkable success of scientific theories. It posits that this success is due to the fact that these theories capture aspects of an objective reality, which allows them to make accurate predictions and explanations (Boyd, 2018).
Alignment with Scientific Progress: Realism aligns well with the idea of scientific progress as a cumulative process of uncovering truths about the external world. It offers a straightforward account of how science builds upon previous knowledge (Worrall, 2018).
Compatibility with Unobservable Entities: Realism comfortably accommodates the existence of unobservable entities in scientific theories, such as subatomic particles or black holes. It asserts that these entities are real and exist independently of human observation (Boyd, 2018).
Weaknesses of Scientific Realism
Underdetermination: One significant challenge for realism is the problem of underdetermination. It has been argued that multiple theories can equally explain the same empirical data, which raises questions about the uniqueness of scientific truth (Psillos, 2018).
Impossibility of Direct Access: Realism faces the criticism that it is impossible to have direct access to the mind-independent reality it posits. Critics argue that all human knowledge is mediated through perception and theory, making it difficult to establish a direct connection to an external world (Worrall, 2018).
Strengths of Anti-Realism
Epistemic Pragmatism: Anti-realism, particularly instrumentalism, takes an epistemically pragmatic stance that emphasizes the practical utility of scientific theories. It highlights the importance of theories in making accurate predictions and organizing empirical data (Fine, 2018).
Avoidance of Ontological Commitments: Anti-realism, including constructive empiricism, avoids making strong ontological commitments about the existence of unobservable entities. This stance can be seen as more cautious and conservative (van Fraassen, 2018).
Focus on Empirical Adequacy: Anti-realism, especially constructive empiricism, focuses on empirical adequacy as the primary criterion for accepting scientific theories. This aligns with the idea that science should be judged by its ability to account for observable phenomena (van Fraassen, 2018).
Weaknesses of Anti-Realism
Challenges in Explaining Scientific Progress: Anti-realism, particularly instrumentalism, faces challenges in explaining the cumulative progress of science. It does not provide a straightforward account of how science can develop a deeper understanding of the external world if it doesn’t aim for truth (Fine, 2018).
Downplaying the Success of Science: Critics argue that anti-realism, by not attributing theories with truth or reference to external reality, downplays the genuine success of science in uncovering truths about the world (Psillos, 2018).
Conclusion
In the debate between realism and anti-realism in contemporary philosophy of science, realism offers a more logically convincing account. While anti-realism provides a valuable perspective by focusing on empirical adequacy and avoiding ontological commitments, it struggles to explain the cumulative progress of science and the apparent success of scientific theories in uncovering truths about the external world. Realism, despite its challenges related to underdetermination and the inability to directly access unobservable entities, aligns better with the fundamental aim of science to discover the objective reality that exists independently of human observation. Therefore, realism presents a more compelling and philosophically robust position in the philosophy of science.
References
Boyd, R. (2018). Scientific Realism, Inference to the Best Explanation, and Pragmatic Encroachment. Erkenntnis, 83(4), 791-808.
Fine, A. (2018). Fictionalism. In E. N. Zalta (Ed.), The Stanford Encyclopedia of Philosophy.
Psillos, S. (2018). Scientific Realism. In E. N. Zalta (Ed.), The Stanford Encyclopedia of Philosophy.
van Fraassen, B. C. (2018). Constructive Empiricism. In E. N. Zalta (Ed.), The Stanford Encyclopedia of Philosophy.
FREQUENT ASK QUESTION (FAQ)
1. What is the difference between realism and anti-realism in philosophy of science?
Answer: Realism asserts the existence of an objective reality independent of human observation, while anti-realism questions the extent to which we can know or access such a reality. Realism holds that scientific theories aim to describe this objective reality accurately, while anti-realism encompasses various positions that challenge this idea.
2. What is the main argument for scientific realism?
Answer: The main argument for scientific realism is that the empirical success of scientific theories, in terms of making accurate predictions and explanations, is evidence that these theories accurately represent aspects of an external, mind-independent reality. Realists argue that this success would be inexplicable if theories did not capture elements of an objective world.
3. How does instrumentalism differ from constructive empiricism in anti-realism?
Answer: Instrumentalism and constructive empiricism are both forms of anti-realism, but they differ in their stance on scientific theories. Instrumentalism views theories as useful tools for prediction and organization of data, without committing to their truth or reference to reality. Constructive empiricism, on the other hand, accepts theories as empirically adequate if they represent observable phenomena accurately but also does not commit to their truth.
4. What are the strengths of scientific realism?
Answer: The strengths of scientific realism include providing a coherent explanation for the success of scientific theories, aligning with the idea of cumulative scientific progress, and comfortably accommodating unobservable entities posited by theories.
5. What are the challenges faced by scientific realism?
Answer: Scientific realism faces challenges such as the problem of underdetermination, the difficulty of establishing direct access to an external reality, and the philosophical debate about the existence of unobservable entities.
