In spite of the increasing popularity of lowtemperature conferences in recent years, some of the pundits argue that the subject of low temperatures has ceased to be a coherent whole, and that low‐temperature conferences should be abandoned. It is true that we have progressed far beyond the pioneering days when every experiment revealed a new phenomenon and every discovery offered a new challenge. With the disappearance of liquid helium and superconductivity from the list of unsolved problems, we are no longer worried by any major mysteries. However, the theories of Landau and Feynman and Bardeen, Cooper, and Schrieffer have not only explained existing facts but have raised new problems, and it is clear that there are enough interesting and unresolved fundamental questions to keep most of us happily occupied for many years to come, and although at present it appears unlikely, there may be further surprises around the corner.

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