more heat than light

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more heat than light (uncountable)

  1. More passion or conflict than enlightenment or illumination on a subject.
    • 1996, Stephen Edelston Toulmin, ‎Björn Gustavsen, Beyond Theory: Changing Organizations Through Participation (page 1)
      So, in any overall account of the social sciences, disputes are liable to break out about what is, or is not, truly scientific research; and, too often, these disputes generate more heat than light.