CIS 1250 Lecture Notes - Lecture 9: Luiza, Pareto Principle, Affordance
11 Oct 2016
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The 80/20 rule (the pareto principle: pareto was an italian economist, 20% of people hold 80% of wealth, 20% of the invested input is responsible for 80% of the results obtained/effects of the large system. Tells us about where to focus our resources (the 20%: not all parts are equal. Some parts of the product will be more important than others. Accessibility: things should be designed so that they are usable by as many people as possible, 4 characteristics to keep in mind: Achieved when everyone can perceive the design i. e. multiple representations for parts of the product (buttons on an elevator) Everyone should be able to operate the design no matter of physical capability. Everyone can easily use the design (cid:862) i(cid:373)plicity is the ulti(cid:373)ate sophisticatio(cid:374)(cid:863) leonardo da vinci. Design should minimize the consequences of user errors. Advance organizer: used to pro(cid:448)ide a high le(cid:448)el descriptio(cid:374) of (cid:449)hat"s happe(cid:374)i(cid:374)g.
