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The four kinds of constraints discussed in The Design of Everyday Things are: Physical, Cultural, Semantic, and Logical. Physical constraints use properties of the physical world to suggest action. Cultural constraints are based on cultural norms, each culture has a set of allowable actions for social situations. Semantic constraints rely on the meaning of a given situation to control the set of possible actions. Logical constraints use logic to take advantage of the logical relationships between the spatial or functional layout of components and the things that they affect or are affected by.
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There are four kinds of constraints. Physical, which use properties of the physical world to suggest action; cultural, which are based on cultural norms, because "each culture has a set of allowable actions for social situations"; semantic, which rely on the meaning of a given situation to control the set of possible actions; and logical, which use good-old logic to take advantage of the logical relationships between "the spatial or functional layout of components and the things that they affect or are affected by."
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How do designers improve their products to work around flaws in human logic? In The Design of Everyday Things, Don Norman teaches the top frameworks b...
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