reductio ad absurdum


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Related to reductio ad absurdum: Logical fallacies

re·duc·ti·o ad ab·sur·dum

 (rĭ-dŭk′tē-ō ăd əb-sûr′dəm, -zûr′-, -shē-ō)
n. pl. re·duc·ti·o·nes ad absurdum (-ō′nēz, -nās)
Disproof of a proposition by showing that it leads to absurd or untenable conclusions.

[Medieval Latin reductiō ad absurdum : Latin reductiō, a bringing back, reduction + Latin ad, to + Latin absurdum, absurdity, from neuter of absurdus, absurd.]

reductio ad absurdum

(rɪˈdʌktɪəʊ æd æbˈsɜːdəm)
n
1. (Logic) a method of disproving a proposition by showing that its inevitable consequences would be absurd
2. (Logic) a method of indirectly proving a proposition by assuming its negation to be true and showing that this leads to an absurdity
3. application of a principle or proposed principle to an instance in which it is absurd
[Latin, literally: reduction to the absurd]

re•duc•ti•o ad ab•sur•dum

(rɪˈdʌk tiˌoʊ ˈæd æbˈsɜr dəm, -ˈzɜr-, -ʃiˌoʊ)
n.
a reduction to an absurdity; the refutation of a proposition by demonstrating that its logical conclusion is absurd.
[1735–45; < Latin]

reductio ad absurdum

A Latin phrase meaning reduction to absurdity, used to mean carrying an argument to the point at which it becomes absurd.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.reductio ad absurdum - (reduction to the absurd) a disproof by showing that the consequences of the proposition are absurd; or a proof of a proposition by showing that its negation leads to a contradiction
disproof, falsification, refutation - any evidence that helps to establish the falsity of something
References in classic literature ?
But as these arguments are largely a reductio ad absurdum of other theories, among which that which I am advocating is not included, I cannot regard them as establishing their contention.
My favourite of the rival clubs of intelligent people the author lists is the Grail Society, which is a reductio ad absurdum of the whole business.
Sarcastic reductio ad absurdum aside, the question should be asked how it is that responsible European community leaders, people with a tradition that has in the past built and maintained productive civilizations in the face of attackers and foes, could seriously entertain the thought that signs, bracelets, and appeals to humanity will deter a masculine society in advanced stages of the march for world domination.
Contrary to what my own colleague, lawyer-columnist Oscar Franklin Tan, asserted in his last column, justices can criticize majority rulings and even each other without the criticism necessarily becoming, reductio ad absurdum, an argument for the impeachment of the criticized.
There are many others but (thanks to Alanna Vagianos of the Huffington Post) we were alerted that the not being ashamed mantra may have reached reductio ad absurdum status.
Riccioli, like Tycho Brahe before him, argued therefore that if Copernicus was right, then the observed stars' diameters must exceed the diameter of Earth's solar orbit--and in some cases those of Jupiter and Saturn--an observational and mathematical inference that entails a reductio ad absurdum.
The Democrats have joined their Republican counterparts in a reductio ad absurdum brand of politics, declaring that anyone who does not agree with the most extreme abortion rights views can go elsewhere.
Lindvall, Bounds, and Lindvall argue for the Reductio ad Absurdum in Dr.
At least a few of us, starting with Henry Kyburg, regard the lottery paradox as a reductio ad absurdum of such a conjunction principle.
And yet, transhumanism could be construed as a reductio ad absurdum of scientism, the belief that science can solve all problems.
Fourthly, the Reductio ad Absurdum rule [x (supposition), y * [logical not]y / Ergo [logical not]x] has also to be considered in order to obtain -x from the initial supposition and the conjunction obtained in the third step.
In a sense, this is the reductio ad absurdum of money as democracy.