Ambiguity

Ambiguity is the property of words, terms, notations and concepts (within a particular context) as being undefined, undefinable, or without an obvious definition and thus having an unclear meaning.

There are three types of ambiguities for informing design: ambiguity of information, ambiguity of context and ambiguity of relationship. Ambiguity of information is inherent in how information is presented. This approach contributes to various interpretations, subjective understandings, and challenges the participants to apply their existing knowledge in different ways. Ambiguity of context is manifested in different or unique situations in order to contribute/impact one's interpretation. This approach utilizes juxtaposition and dualities to elicit multiple understandings. Lastly, ambiguity of relationships draws upon one's personal or reactionary relationship to an object that is not necessarily ambiguous itself. This approach relies on self-reflection and self-projection to arrive at mostly affected meanings

References:
1 "Ambiguity". Wikipedia. Retrieved on Sept 9 at:http://en.wikipedia.org/wiki/Ambiguity
2"". Wikipedia. Retrieved on Sept 9 at:www.slis.indiana.edu/faculty/yrogers/amb_frame/