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Enactive interfaces are related to a fundamental interaction concept that often is not exploited by existing [[Human–computer interaction|human-computer interface]] technologies. As stated by cognitive psychologist [[Jerome Bruner]], the traditional interaction with the information mediated by a computer is mostly based on symbolic or iconic knowledge, and not on enactive knowledge.<ref name=Slee/> While in the symbolic way of learning knowledge is stored as words, mathematical symbols or other symbol systems, in the iconic stage knowledge is stored in the form of visual images, such as diagrams and illustrations that can accompany verbal information. On the other hand, enactive knowledge is a form of knowledge based on active participation, knowing by doing, by living rather than thinking.<ref name=Slee2/>
:"Any ___domain of knowledge (or any problem within that ___domain of knowledge) can be represented in three ways: by a set of actions appropriate for achieving a certain result (enactive representation); by a set of summary images or graphics that stand for a concept without defining it fully (iconic representation); and by a set of symbolic or logical propositions drawn from a symbolic system that is governed by rules or laws for forming and transforming propositions (symbolic representation)"<ref name=Bruner/>
A particular form of knowledge is a [[Skill|''skill'']], juggling being a simple example, and the acquisition of a skill is one area where enactive knowledge is evident. The sensorimotor and cognitive activities involved in acquiring skills are tabulated by the SKILLS FP6 European skills project.<ref name=Bardy>
{{cite journal |title=An enactive approach to perception-action and skill acquisition in virtual reality environments |author=B Bardy, D Delignières, J Lagarde, D Mottet, G Zelic |journal= Third International Conference on Applied Human Factors and Ergonomics |___location=Miami |date=July, 2010 |url=http://didier.delignieres.perso.sfr.fr/Colloques-docs/Bardy%20et%20al.%20%282010%29%20Skills%20apprentissage.pdf }}
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==Multimodal interfaces==
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