[[http://tvtropes.org/pmwiki/discussion.php?id=tksjdfqs&trope=ConservationOfNinjitsu From YKTTW]]
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SeanTucker: Clarified the Alien example.
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DeusExBiotica: This is a personal favorite, but I cut:
* Subverted in fifth season premiere of ''BuffyTheVampireSlayer''. The weeks leading up to the episode featured an ad campaign which played up the confrontation, hinting that Dracula would be the BigBad for the upcoming season. However, Buffy neatly dispatched him before the episode's end.
... because it has nothing to do with this. At all. That's an UnReveal, and no two ways about it.
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DarkSasami: This entry and [[http://www.goats.com/archive/980126.html this comic]] point to the existence of a higher order theory, and possibly the fundamental interconnectedness of all things. (The comic also explains why Goats isn't funny any more.)
{{Seth}}... best trope ever.
{{Burai}}: Hmm. Technically the revised form is more accurate with the expansion into other mooks, but it's not as much fun as saying "one over ninjas". :-)
YourObedientSerpent: Serious brownie points to whomever found that ''StarHarborNights'' quote.
{{Egak}}: Thanks
Milly: I'm not really good with making additions to pages, but the following link both references and subverts this trope, I think: http://www.giantitp.com/comics/oots0453.html
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{{Ununnilium}}: There were ninjas in ''Film/{{Alien}}''? I never knew.
AlexandraErin: They were totally there, just [[HighlyVisibleNinja better than average at stealth]].
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{{Cassius335}}: Does the Turtles example really count? Shredder (especialy 200X Shredder) IS the BigBad, after all.
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{{Zeke}}: No place for this in the article, but I still wanna mention it: I had a friend years ago whose username at my forum was "One Hundred Ninjas". When I asked about it, he explained the inverse relationship.
As for me, well, [[http://www.dieselsweeties.com/shirts/iamtenninjas/ I Am Ten Ninjas]].
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Ditto in {{Ben 10}} is closer to MesACrowd than this one. Moving...
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There is ''no such thing'' as ninjitsu! Change the name of this article!
{{Ununnilium}}: No. `.`v
More seriously: Yes, it's properly spelled as "ninjustu", but IMHO, it's not worth changing a long-established name for one letter.
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{{Pieguy259}}: Would the Xiaolin Showdown example be an aversion, or a justification?
billythehick: just takin the credit for the shoot 'em up quote, as i forgot to sign my name in.
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Gentlemen396: I removed the Inverse Ninja Law link, since it's a recursive redirect.
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FastEddie: pulled out this pseudomath:
-> It should be noted that this trope has built in [[JustifiedTrope justification]] in situations where economics and/or pride influences group structure. When economics are in play, the formula tends to become $/N (meaning, for instance, a crime boss can afford to hire a team of unimpressive mercenaries ''or'' a single effective hitman), whereas pride tends to keep Elites beyond the solo threshold from working together.
... as it didn't add much and is a little difficult to parse.
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Inkblot: What would happen if one fought half a ninja? Since the law is 1/N, half a ninja is twice as deadly as a full ninja.
{{Adam850}}: See DisabilitySuperpower. Half a ninja would be nigh unstoppable.
EllenHayes: However, there's some kind of discontinuity here, because ZERO ninjas would defeat EVERYTHING, having 1/0=INFINITE power (even your calculator can't deal with the implications). Transfinites and the varieties of infinities are left as an exercise for the seriously twisted Otaku / math-geek multiclass, and maybe it'll keep them busy for a while.
INH: Actually, 1/0 has no answer. Even infinity multiplied by zero will equal zero.
EllenHayes: Actually, [[http://en.wikipedia.org/wiki/Division_by_zero {{INH}} is only somewhat right.]]
FastEddie: Yes, zero ninjas is equal to one pirate, of which there is no more powerful force in the universe.
A certain [[DoctorMcNinja Doctor]] might disagree about that.
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''[Before the redirect was created, obviously]:''
FastEddie: Yeah, whoever thought it was important that it be spelled 'ninjutsu' rather than 'ninjitsu' made a change that broke 80 pages referring to the article and turned it from an article that has brought in 2,100 referrals from the web since April to one that has brought in none. That letter 'u' must be pretty important to somebody.
BigT: Quit your bellyachin'. All you had to do was create a redirect. And since only admins can delete, I'm not sure how ConservationOfNinjitsu was deleted in the first place.
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Possibly worth mentioning, but I don't want to stay up to write the entry: ''StarWarsCloneWars'' episode 22, where a CIS commander boasts that it would take a hundred Jedi to take his fortress, then panics when he finds out it's being attacked by just two. Then again, maybe that's TheLawOfDiminishingDefensiveEffort. --DocumentN
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AndrewCarlssin: Is is worth mentioning ''Spy Kids''? The ''plan'' was that each member of the family would fight 100 indestructible robots, but they didn't actually do it.
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AceOfScarabs: My rationalisation of this trope: if you have too many ninja in one fight, they tend to get in each other's way and have to tone down their styles to avoid hitting each other.