Newton's flaming laser sword

proper noun

A philosophical razor which states that propositions or claims that cannot be resolved through experiment or observation are not worth debating.

Meanings

proper noun

alternative Newton's laser sword

  1. human sciencesA philosophical razor which states that propositions or claims that cannot be resolved through experiment or observation are not worth debating.

    Also, I invoke Newton's Flaming Laser Sword on this thread.

    2010 October 25, "Valhallen", “Re: The meaning of the universe explained by Jesus”, in Snafu Comics, retrieved 05 Dec 2011
    5 more examples

    Mathematicians and scientists feel that they have found a more difficult but much more satisfying game to play. Newton's Flaming Laser Sword is one of the rules of that game.

    2004, Mike Alder, “Newton's Flaming Laser Sword, Or: Why Mathematicians and Scientists don't like Philosophy but do it anyway”, in Philosophy now, volume 46, archived from the original on 14 Nov 2011, pages 29–32

    I prefer to be anti-religion and live by Newton's flaming laser sword, Occam's Razor and Hanlon's Razor.

    2011 January 5, "Arkhanno", “Re: Atheists don't know how to reason”, in I Wanna Be The Forums, retrieved 05 Dec 2011

    What is the actual point of adding in God to your equation if it is a^([sic]) unknown domain? So, we remove such variables using the Newton's Flaming Laser Sword.

    2011 January 8, "Azwraith", “Atheism - Belief? Religion? (comment)”, in Minegarde, retrieved 05 Dec 2011

    Just demanding there is nothing you can do, because the flashy light told you so is grounds for Newton's Flaming Laser Sword.

    2011 July 19, "Drastic", “Thought Experiment Regarding Morality (comment)”, in That Guy With the Glasses, retrieved 05 Dec 2011

    Put as much math as you want to it, and it's still a philosophical statement... to which I say that Newton's Flaming Laser Sword is the best response: "what cannot be settled by experiment is not worth debating".

    2011 September 12, "Decivre", “Open thread on Episode #726 (comment)”, in The Atheist Experience, retrieved 05 Dec 2011

    Synonyms: Alder's razor, NFLS

Synonyms & antonyms

proper nounA philosophical razor which states that propositions or claims that cannot be resolved through experiment or observation are not worth debating.

Origin

Named after Isaac Newton. Coined by Australian mathematician and philosopher Mike Alder in 2004 in an article of the same title, to be hyperbolically “much sharper and more dangerous than Occam's razor”.

Full word history & related roots →
Cite this entry
APA

Newton's flaming laser sword. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/Newton's%20flaming%20laser%20sword

MLA

“Newton's flaming laser sword.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Newton's%20flaming%20laser%20sword. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “Newton's flaming laser sword,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/Newton's%20flaming%20laser%20sword.

Source: Newton's flaming laser sword on Wiktionary, CC BY-SA 4.0.