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The Laws of Design: From Principle to Practice

Patrick Haney
September 26, 2011

The Laws of Design: From Principle to Practice

Given at the DC Design Talks in February of 2008 in Washington DC.

Patrick Haney

September 26, 2011

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  1. “Like all man-made ‘laws’ they do not exist in the

    absolute sense - to break them is no sin.” John Maeda, on his Laws of Simplicity
  2. Fitt’s Law The time required to move to a target

    is a function of the target size and distance to target
  3. Hick’s Law The time it takes to make a decision

    increases as the number of alternatives increase
  4. Affordance A property in which the physical characteristics of an

    object or environment influence its function
  5. Legibility The visual clarity of text, generally based on the

    size, typeface, contrast, text block, and spacing of the characters used
  6. Accessibility Objects and environments should be designed to be usable,

    without modification, by as many people as possible