"principle of least astonishment" meaning in English

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      "expansion": "principle of least astonishment",
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  "lang": "English",
  "lang_code": "en",
  "pos": "name",
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          "langcode": "en",
          "name": "Design",
          "orig": "en:Design",
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            "Culture",
            "Society",
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          "name": "Software",
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      "glosses": [
        "A principle that the design should match the user's experience, expectations, and mental models."
      ],
      "id": "en-principle_of_least_astonishment-en-name-nhHwdRmy",
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          "software",
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      "qualifier": "user interface",
      "raw_glosses": [
        "(software, user interface, design) A principle that the design should match the user's experience, expectations, and mental models."
      ],
      "synonyms": [
        {
          "word": "POLA"
        },
        {
          "word": "principle of least surprise"
        }
      ],
      "topics": [
        "arts",
        "computing",
        "design",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences",
        "software"
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "user interface principle",
          "word": "vähimmän kummastuksen periaate"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "user interface principle",
          "tags": [
            "masculine"
          ],
          "word": "principe de moindre surprise"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "user interface principle",
          "tags": [
            "neuter"
          ],
          "word": "Prinzip der geringsten Überraschung"
        }
      ],
      "wikipedia": [
        "principle of least astonishment"
      ]
    }
  ],
  "word": "principle of least astonishment"
}

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      "expansion": "principle of least astonishment",
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  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
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        "en:Software"
      ],
      "glosses": [
        "A principle that the design should match the user's experience, expectations, and mental models."
      ],
      "links": [
        [
          "software",
          "software"
        ],
        [
          "design",
          "design#Noun"
        ]
      ],
      "qualifier": "user interface",
      "raw_glosses": [
        "(software, user interface, design) A principle that the design should match the user's experience, expectations, and mental models."
      ],
      "synonyms": [
        {
          "word": "POLA"
        },
        {
          "word": "principle of least surprise"
        }
      ],
      "topics": [
        "arts",
        "computing",
        "design",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences",
        "software"
      ],
      "wikipedia": [
        "principle of least astonishment"
      ]
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "user interface principle",
      "word": "vähimmän kummastuksen periaate"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "user interface principle",
      "tags": [
        "masculine"
      ],
      "word": "principe de moindre surprise"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "user interface principle",
      "tags": [
        "neuter"
      ],
      "word": "Prinzip der geringsten Überraschung"
    }
  ],
  "word": "principle of least astonishment"
}