"more heat than light" meaning in English

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      "expansion": "more heat than light (uncountable)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "examples": [
        {
          "ref": "1979 April 14, David M. Stryker, “A Contribution”, in Gay Community News, page 4",
          "text": "Since I instigated the Manhattan Review (STH) ad which ran in GCN, which is now generating so much heat but very little light, I feel I must make some points clear.",
          "type": "quotation"
        },
        {
          "ref": "1996, Stephen Edelston Toulmin, Björn Gustavsen, Beyond Theory: Changing Organizations Through Participation, page 1",
          "text": "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.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "More passion or conflict than enlightenment or illumination on a subject."
      ],
      "id": "en-more_heat_than_light-en-noun--0Q3OYOl",
      "links": [
        [
          "passion",
          "passion"
        ],
        [
          "conflict",
          "conflict"
        ],
        [
          "enlightenment",
          "enlightenment"
        ],
        [
          "illumination",
          "illumination"
        ]
      ],
      "tags": [
        "uncountable"
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    }
  ],
  "word": "more heat than light"
}

{
  "head_templates": [
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      "expansion": "more heat than light (uncountable)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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        "Quotation templates to be cleaned"
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      "examples": [
        {
          "ref": "1979 April 14, David M. Stryker, “A Contribution”, in Gay Community News, page 4",
          "text": "Since I instigated the Manhattan Review (STH) ad which ran in GCN, which is now generating so much heat but very little light, I feel I must make some points clear.",
          "type": "quotation"
        },
        {
          "ref": "1996, Stephen Edelston Toulmin, Björn Gustavsen, Beyond Theory: Changing Organizations Through Participation, page 1",
          "text": "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.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "More passion or conflict than enlightenment or illumination on a subject."
      ],
      "links": [
        [
          "passion",
          "passion"
        ],
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          "conflict",
          "conflict"
        ],
        [
          "enlightenment",
          "enlightenment"
        ],
        [
          "illumination",
          "illumination"
        ]
      ],
      "tags": [
        "uncountable"
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  ],
  "word": "more heat than light"
}