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Here are the listed of the problems we discussed in class. Problems with direct manipulation Spatial/visual representations too spread out Poor mapping of signifiers/controls High

image text in transcribedHere are the listed of the problems we discussed in class. image text in transcribed

Problems with direct manipulation Spatial/visual representations too spread out Poor mapping of signifiers/controls High level schema can be confusing Design may force information "off of screen" Users must LEARN the interface Poor visual metaphor -> poor mental models Can be slower than keyboard use

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