False Equivalence
Also: False Equivalence
Logical Fallacy: False Equivalence
Incorrectly claiming that two things are equivalent, despite the fact that there are notable differences between them.
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All IPCC definitions taken from Climate Change 2007: The Physical Science Basis. Working Group I Contribution to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Annex I, Glossary, pp. 941-954. Cambridge University Press.