"black swan fallacy" meaning in English

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  "lang_code": "en",
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      "examples": [
        {
          "ref": "2015, Robert V Kozinets, Netnography: Redefined, page 163:",
          "text": "The black swan fallacy holds that if all you have ever observed in your field research are white swans, you might be tempted to conclude 'All swans are white'. However, a black swan was discovered in Australia. Therefore, all it takes is one black swan to falsify the general statement about the universality of white swans.",
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      "glosses": [
        "The logical error of discounting the possibility of something because no evidence has yet been observed for it."
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      "related": [
        {
          "word": "falsifiable"
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  "word": "black swan fallacy"
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  "lang_code": "en",
  "pos": "noun",
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    {
      "word": "falsifiable"
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          "ref": "2015, Robert V Kozinets, Netnography: Redefined, page 163:",
          "text": "The black swan fallacy holds that if all you have ever observed in your field research are white swans, you might be tempted to conclude 'All swans are white'. However, a black swan was discovered in Australia. Therefore, all it takes is one black swan to falsify the general statement about the universality of white swans.",
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        "The logical error of discounting the possibility of something because no evidence has yet been observed for it."
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  "word": "black swan fallacy"
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