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Stage 4
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Evidence is now seen as important to the construction of knowledge claims, along with the acknowledgment that a belief cannot be known with absolute certainty for pragmatic reasons. thus, knowledge claims are idiosyncratic to the individual.
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Knowledge is uncertain and knowledge claims are idiosyncratic to the individual because of situational variables (e.g., incorrect reporting of data, data lost over time, or disparities in access to information; these factors dictate that any knowledge claim contains an element of uncertainty.
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Since there is no source of certainty for one's beliefs, beliefs are justified by giving reasons that are often idiosyncratic, such as choosing evidence that fits an established belief.
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"I'd be more including to believe evolution if they had proof. It's just like the pyramids: I don't think we'll ever know. Who are you going to ask? No one was there."
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Stage 5
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Types of evidence are differentiated within perspectives (e.g., historical or scientific evidence). Further, different rules of inquiry across perspectives or disciplines are recognized. Quality of evidence is also evaluated as strong/weak, relevant/irrelevant, etc. Evidence is not an end in itself, but is used to construct interpretations.
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Knowledge is seen as contextual and subjective. Since it is filtered through a person's perceptions and criteria for judgment, only interpretations of evidence may be known.
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Beliefs are justified within a particular context using the rules of inquiry for that contest, with the understanding that justification is context-specific or that beliefs are balanced against each other. Each approach has the effect of complicating and delaying judgments.
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"People think differently and so they attack the problem differently. Other theories could be as true as my own, but based on different evidence."
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