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whether we say ^the past determines the future5 or ^he future determines the past. This position influenced by the parity between prediction and retrodu-ction in Newtonian mechanics is different from Hume's concept of causality which distinguishes the cause as that which precedes the effect.
19 N Bohr, Discussion with Einstein, Einstein Philosopher Scientist (ed), p 233.
20 Niels Bohr, "On the Notion of Causality and Complementarity" Science, Vol III No 2873, Washington 1950, p 51. For the views of other scientists who have made assertions regarding the renunciation of causality see :
A Eddington, The Nature of'the Physical World, Cambridge 1931; H Reichenbach Philosophic Foundations of Quantum Mechanics, Berkeley, Los Angeles 1946; L Rosen- ^ feld : Strife about Complementarity, Science Progress, Vol XLI No 163, London 1953.
21 Waismann, The Decline and Fall of Causality, Turning Points in Physics (ed), p 137. The very title of Waismann's essay is illustrative of the Copenhagen scientists' views in relation to the concept of causality.
22 See Waismann, op.cit.
23 Heisenberg, Physics and Philosophy, p 8
24 J P Tigier, Observation and Interpretation (ed). p 72.
25 Heisenberg, The Physical Principles of Quantum Theory, p 58.
26 E Cassirer, Determinism and Indeterminism in Modern Physics, Yale University Press 1956,pi 14,
27 Ibid.p 119.
28 Ibid, p 119.
29 In the euphoria over the success of quantum mechanics, the philosophical views of its founders (with the exception of Planck, Einstein and Schrodinger) were taken to be the only views and attempts of equally prominent scientists were more or less ignored. See Karl Popper, "Quantum Mechanics without the Observer", Quantum Theory and Reality M Bunge (ed). Springer Verlag, New York 1967.
80 Albert Einstein, "Physics and Reality", Ideas and Opinions, New York, p 316.
81 Ibid, p 319.
82 Ibid. 33 Ibid.
^ J P Vigier, "Dialectics and Natural Science", Existentialism vs Marxism G Novack (ed). New York p 248.