Christian Servin, Olga Kosheleva, Vladik Kreinovich. Why 70/100 Is Satisfactory? Why Five Letter Grades? Why Other Academic Conventions?. In Martine Ceberio, Vladik Kreinovich, editors, Decision Making Under Uncertainty and Constraints - A Why-Book. Volume 217 of pages 25-32, Springer, 2023. [doi]
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