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WikiCards · Card list · Science cards · Reductio ad absurdum
Uncommon card · Science
Reductio ad absurdum, an Uncommon card
In logic, reductio ad absurdum, also known as argumentum ad absurdum, apagogical argument, or proof by contradiction, is the form of argument that attempts to establish a claim by showing that following the logic of a contrary proposition or argument would lead to absurdity or contradiction.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 72
- DEF
- 57
- Power
- 129
- Wikipedia reads a year
- 150,000
Power 129 (ATK + DEF): stronger than 65 % of WikiCards cards.
The facts on the card
The card carries these facts from its Wikipedia article.
- Although it is quite freely used in mathematical proofs, not every school of mathematical thought accepts this kind of nonconstructive proof.
- This argument form traces back to Ancient Greek philosophy and has been used throughout history in both formal mathematical and philosophical reasoning, as well as in debate.
- In mathematics, the technique is called proof by contradiction.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Reductio ad absurdum article was read about 150,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 72 and blocks with 57: each hit it takes is cut by 23 %.
How to get Reductio ad absurdum
Open packs. Each pack holds five cards drawn from real Wikipedia articles, the rarest last, and the fifth card is always Rare or better. The odds are shown in the game. A free pack arrives every hour and two can wait, and the Coins you win in duels buy more packs.
More Science cards
Cards close in power
The cards just above and just below Reductio ad absurdum in the power ranking, all domains together.
- God Bless AmericaUncommon · Arts · ATK 71 DEF 58
- Gregory PorterUncommon · Arts · ATK 67 DEF 62
- Nick FolignoUncommon · Society · ATK 72 DEF 57
- Tommy EmmanuelUncommon · Arts · ATK 68 DEF 61
- WrenUncommon · Nature · ATK 69 DEF 60
- Basel problemUncommon · Science · ATK 75 DEF 54
Card lists
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- Tier listS and A tiers by power (ATK + DEF)
Credits
Text : Wikipedia, Reductio ad absurdum (revision), CC BY-SA 4.0. Photo : John Pettie, Public domain, Wikimedia Commons.
