Moore's : Every two years, the number of transistors on integrated circuits will double.
Fitts' The time it takes to move from a starting position to a final target is determined by two factors: the distance to the target and the size of the target.
Hick's :The time it takes a user to make decisions is determined by the number of choices they have.
Migic Number Seven: The human mind is best able to remember information in chunks of seven ( + or – 2).
Tesler's : Some complexity is inherent to every process. There is a point beyond which you can’t simplify a process any further. You can only move the inherent complexity from one place to another.
Poka-Yoke: Mistake proofing. Avoid inadvertent errors.
Direct and Indirect Manipulation:process in which, by selecting a digital object with a finger or with a mouse we can then do something to the object.
Feedback and Feedforward: knowing what will happen before you perform an action.
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