WConceptWCredibilityWConjectureWGuessingWGadfly (philosophy and social science)WGuessingWIdeaWGuessingWIntuitionWMeasurementWMindWObservationWOccam's razorWPoint of view (philosophy)WPhilosophy of mindWPoint of view (philosophy)WPrincipleWProgressWThoughtWTruthinessWUncertaintyWConjectureWWhy there is anything at allWWorldview
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