back

Logic

Argument Forms

Deductionif the premises are true, so too is the conclusion

Inductionif the premises are probable, the conclusion is true and has strength relative to the probability of the premises

Loaded questionpremise is dependent on an unproven presumption

Begging the questionthe premise is dependent on the conclusion

Circular reasoningA proves B and B proves A

False dilemma / False dichotomywhen the premise erroneously asserts that only one of many choices can be true

Nirvana fallacythe rejection of imperfect solutions to problems, on the basis that they are imperfect

Non sequiturthe conclusion does not follow the premise

Confirmation biasthe tendency to seek information that supports one's preconceptions

False priorspreconceptions that conflict with evaluating facts in an unbiased manner