Seldom does one remember reading a particular magazine article after twenty years. However, there is an article I have never forgotten, probably because of the discussion it provoked among me and my fellow graduate students at Duke University. I now want to respond to that article.

1.
For a general reference on the history and scientific philosophy of low temperature physics, see The Quest for Absolute Zero, Kurt Mendelssohn (second edition), London: Taylor & Francis, New York Wiley (1977).
2.
J. P.
Harrison
,
Journal of Low Temperature Physics
37
,
467
(
1979
).
3.
Frank Pobell and Gert Eilenberger en‐gage in a dialogue that is surprisingly similar to the exchange here between me and Pippard. See Physikalischer Blätter March 1981.
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