8 of 8 people found the following review helpful:
5.0 out of 5 stars
A really fantastic introduction to the philosophy of Roy Bhaskar..., June 19, 2011
This review is from: Critical Realism: An Introduction to Roy Bhaskar's Philosophy (Paperback)
I am in total agreement with the previous review of this book. This is a fantastic introduction to the philosophy of Roy Bhaskar and his version of critical realism. The book does not require any previous knowledge of Roy Bhaskar's philosophy on the part of the reader (though it would probably help to be at least familiar with some of the major debates in the philosophy of science). Rather than simply repeating what the previous reviewer has written I thought I would provide a slightly more detailed summary of Roy Bhaskar's philosophy of science and his critical theory as presented in this book for anyone who is interested. And if you are not interested...well...let's just hope we never meet in any dark alleys...
I will divide my review up into topics.
ONTOLOGY
Unlike many philosophers of science Roy Bhaskar is very interested in ontological questions - specifically, Bhaskar attempts to determine what the world must be like in order for experimental science to be possible and necessary. Roy Bhaskar is not interested in the ontological implications of specific scientific theories (relativity theory, quantum mechanics, etc.) but in the ontological implications of the practice of experimental science itself. Basically, Bhaskar is attempting to provide a transcendental argument similar to the transcendental arguments put forward by Immanuel Kant - i.e. given that experimental science is a fact, and given that it provides genuine knowledge of the world, what must the world be like?
Bhaskar reaches two important ontological conclusions about the nature of reality based on the possibility and necessity of experimental science.
First, Bhaskar believes that there are three distinct ontological dimensions to reality which he terms the dimension of the real (Dr) the dimension of the actual (Da) and the dimension of the empirical (De). The dimension of the real includes all the entities in the world along with their structures and tendencies (or causal powers); the dimension of the actual is the actual history of the world and the interactions between the basic entities (in which some causal powers are expressed while some remain unexpressed); and the dimension of the empirical is the dimension of what is consciously experienced. Bhaskar believes the following relations hold between the three dimensions: (Dr) will be greater than or equal to (Da) which will be greater than or equal to (De). This is because there are unrealized tendencies in the real and there are realized tendencies which are unobserved in the actual.
Second, Bhaskar believes that the world must be stratified and open since otherwise it would not be possible to explain why some mechanisms are unexpressed. As Collier writes, "Nature is neither a closed system nor just one thing after another, it is a multiplicity of mechanisms jointly producing courses of events. So the course of events is in principle explicable, but not in terms of any one science" (pg46). Bhaskar is, therefore, opposed to any form of reductionism which would attempt to reduce what Bhaskar believes are irreducible levels of reality to a single level (the biological to the physical - the cultural to the psychological, etc.) though the levels do interact with each other.
A few examples might help explain what Bhaskar means. Physics finds in the world four fundamental forces (gravitation, electromagnetism, and the strong and weak nuclear forces). These forces underlie the more complex forms that emerge from them but, Bhaskar argues, in order to give a complete picture even of the purely physical world physical laws and forces are not enough. In order to explain, for example, "the proliferation of brightly colored objects (flowers, colorful birds, etc.) at a certain stage of natural history we have to appeal to the laws of natural selection" (pg111). The principle of natural selection cannot be reduced to physics and yet, it is necessary to explain the appearance of the physical world around us (similarly, in order to explain the presence of ancient temples in the physical world it would be necessary to appeal to the psychological and sociological levels of explanation since physical laws operating on their own will never construct a temple).
Another example is drawn from linguistics and sociology. There is a law relating to linguistic change which argues that "speakers tend to prefer combinations of sounds that are easy to articulate" (pg211). In a great deal of philosophy of science laws are conceived to be deductive-nomological, or universal statements, from which particular predictions can be deduced. In order to refute a universal statement a single negative instance is all that is required (Popper's falsification theory). The problem with this law relating to linguistic change (and any law of linguistic change) is that there are always going to be many counter-examples. One escape would be to turn these laws into probabilistic laws, but since probabilistic laws cannot be falsified they are not really explanations (pg211). This whole problematic assumes, mistakenly Bhaskar would argue, that linguistics is a closed system and that constant conjunction is a necessary condition when formulating universal laws. If we admit that linguistics is an open system, however, then counter-examples do not necessarily refute the universal law (experimental science is able to construct closed systems through the experimental method in order to isolate mechanisms but this is impossible in theories of linguistic change). Collier points to a counter-example in British English in which there has been a tendency to pronounce every letter of a word which seems to contradict this more universal law. Collier offers one possible explanation: perhaps the petty bourgeoisie favor 'spelling pronunciation' and other classes tend to copy their speech (pg211). Whether this particular explanation is the right one or not is unimportant. What this example illustrates is that a genuine tendency in one system (the tendency in linguistic change to move towards easily articulable sounds) can be unexpressed due to interference from tendencies in another system (in this case sociological tendencies).
EPISTEMOLOGY
Bhaskar's epistemology is based on his separation of what he calls the transitive dimension from what he calls the intransitive dimension. The transitive dimension is the sum total of all of our knowledge at a given point in time (it is similar in some ways to Kuhn's paradigms I believe). The intransitive dimension is the object of that knowledge, or, the mechanisms which are independent of all knowledge but which knowledge attempts to know. Bhaskar believes the assumption of an intransitive dimension is necessary to explain theory change (contra Kuhn). There is an independent reality which knowledge is attempting to grasp and which different theories (however divergent they may be) are all aiming at. If there were no intransitive dimension then different theories would not really be aiming at the same reality and there would be no reason to prefer one over any other (if Aristotelian science and Galilean science were not aiming at the same physical world, despite the difference in their basic concepts, then we would have no reason to prefer one over the other, or to replace one with the other, since they would not even be in conflict with each other). We never really have direct access to the intransitive dimension except through the mediation of the transitive dimension (Kuhn is right about that) but the assumption of the intransitive dimension is absolutely necessary to science in Bhaskar's opinion.
Bhaskar is also fairly critical of strict empiricists in epistemology (and in this he would side with Kuhn I believe). The positive contribution of empiricism was that it was able to purge us of many of the inheritances of tradition, custom, ancient texts, etc. which were standing in the way of new knowledge and got us to look freshly at the world again. Empiricist epistemology makes a mistake, however, when it goes to the extreme of believing that human beings are (or should be) 'blank slates' or that it is possible to provide a purely individual, empirical foundation to the theories of science.
The professional scientist does not construct scientific theories by beginning from individual sense perception alone. Philosophy of science falls into insoluble problems when it attempts to ground general scientific theories purely in individual sense perception (Hume's problem of induction is one example). Scientists inherit a tradition of scientific thought and theories which they then transform. This inheritance is essential (we do not begin from scratch after every generation). As Collier writes, "Scientific training is to the 'subjective aspect' of scientific work what experiment is to the 'objective aspect'. It produces suitable 'knowing subjects'...Hence, to become a scientifically 'knowing subject' is to acquire a specific set of ideas, techniques and skills; little can be said about 'knowing subjects' at any abstract, historically unspecific level, after the manner of traditional epistemology...our minds are formed by historically specific societies, and that is the only way they can be formed at all" (pg54). Bhaskar sees the enterprise of science as a production of new knowledge by using previous knowledge as material rather than as an attempt to found universal laws on individual sense perceptions.
SOCIAL CRITIQUE
Roy Bhaskar's ideas about the relations between scientific realism and social critique (or efforts at human emancipation) are, in my opinion, some of his most interesting ideas. This review is already quite long so I will try to be as brief as possible in my descriptions. Basically Bhaskar is able to offer what I think is one of the most sophisticated...
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