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Unformatted text preview: The birthday fallacy is a fallacious argument in which the second proposition follows from the first when in actuality it does not. The birthday fallacy is shown in this argument: (1) Every person has a birthday – a day on which he or she was born (2) There is a single day that is everybody’s birthday. The first proposition does not deductively lead to the second proposition. The birthday fallacy is a fallacy due to its logical structure. It commits a mistake in its reasoning which makes the argument persuasive but invalid because fallacious arguments do not provide a guarantee that the conclusion is true. The birthday fallacy is committed in Aquinas’s argument within premise (4). It states that “In the natural world, there are no infinite cause/effect chains.” Aquinas is saying that all motion has a beginning. This does not imply that all motion has the same beginning, which Aquinas explicitly states in premise (5): Hence there is an entity outside of the natural world (a supernatural being), which causes the motion of the first...
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This note was uploaded on 01/18/2011 for the course PHI 1030 taught by Professor Lombard during the Winter '10 term at Wayne State University.
- Winter '10