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David_Bolin comments on 0 And 1 Are Not Probabilities - Less Wrong

34 Post author: Eliezer_Yudkowsky 10 January 2008 06:58AM

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Comment author: David_Bolin 20 August 2015 07:08:55PM 0 points [-]

It should probably be defined by calibration: do some people have a type of belief where they are always right?

Comment author: Lumifer 20 August 2015 07:36:53PM -1 points [-]

Self-referential and anthropic things would probably qualify, e.g. "I believe I exist".

Comment author: StellaAthena 20 August 2015 08:33:17PM -1 points [-]

You can phrase statements of logical deduction such that they have no premises and only conclusions. If we let S be the set of logical principles under which our logical system operates and T be some sentence that entails Y, then S AND T implies Y is something that I have absolute certainty in, even if this world is an illusion, because the premise of the implication contains all the rules necessary to derive the result.

A less formal example of this would be the sentence: If the rules of logic as I know them hold and the axioms of mathematics are true, then it is the case that 2+2=4