The Enigma of the Aerofoil: Rival Theories in Aerodynamics 1909-1930, by David Bloor, 2011, describes the initial British criticism of the German circulation theory of lift developed by Kutta and Prandtl in the beginning of the 20th century, which resisted the attack in the absence of something better and became the leading theory propagated in text books still today (see previous post).
- Those who point to the airplane as a symbol of the truth of science, the power of technology, and the reality of knowledge are therefore right—but do they know what they are saying?
- The successful strategy involved the deliberate use of known falsehoods in artful balance with accepted truths. The supporters of circulation theory showed how simple falsehoods could yield dependable conclusions when dealing with a complex and otherwise intractable reality. This is the real enigma of the aerofoil.
- The enigma of the aerofoil is the enigma of all knowledge.
But today it is possible to solve the Navier-Stokes equations computationally, and this changes the science of aerodynamics from pessimism back into positivism and "truth", based on the original seemingly correct fundamental idea that all of fluid dynamics emerges as solutions of the Navier-Stokes equations. This brings a major change into aerodynamics as evidenced on The Secret of Flight, which may be representative for other areas of physics, as further elaborated on The World as Computation.
PS The philosophy of science reacts to the development of science with a certain delay. The logical positivism of the 1920s may be seen as an expression of classical rational science at its peak in the late 19th century, while the postmodern relativism and pessimism of e.g. Feyerabend in Against Method, expresses the collapse of rationality in modern physics.
An attempt to combine relativism with rational positivism is made in Many-Minds Relativity and Many-Minds Quantum Mechanics. I argue that relativism with different views of different observers who do not share a common "objective" view, is compatible with rational logical positivism.