History Main / EnforcedTrope

* RatedMForMoney

* Any work that exists to promote or sell a product (such as a line of toys) will be constrained by product availability, turnover, popularity and gimmicks. {{Transformers}} is probably the most successful example.

* DawsonCasting can sometimes be necessary for legal reasons. One example is the film adaptation of ''Literature/TheReader''. Michael Kross legally couldn't shoot his sex scenes with KateWinslet until he had turned 18.

* Any medium that relies on a small amount of people on a hectic time table will occasionally [[DidNotDoTheResearch not be able to do the research]] correctly, and make some mistakes. Especially if they're on a contract.

* Any medium that relies on a small amount of people on a hectic time table will occasionally not be able to do the research correctly, and make some mistakes. Especially if they're on a contract.

* MoralGuardians

* Any medium that relies on a small amount of people on a hectic time table will occasionally [[DidNotDoTheResearch not be able to do the research correctly]], and make some mistakes. Especially if they're on a contract.

* HorrorTropes -- ''all'' of them -- are Enforced in the film ''TheCabinInTheWoods.'' The mysterious bad guys are unable to get what they need unless everything is enacted as a paint-by-numbers horror film. It turns out it's for some sort of ritual that they need to enact repeatedly. Someone says "Stick together, play it safe?" They spray him with a gas that makes him stupider and say "we should split up." The cast not fitting into the basic dynamic of the FiveManBand? Force 'em, subliminally.
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* HorrorTropes -- ''all'' of them -- are Enforced in the film ''TheCabinInTheWoods.'' The mysterious bad guys are unable to get what they need unless everything is enacted as a paint-by-numbers horror film. It turns out it's for some sort of ritual that they need to enact repeatedly.

* The AudibleSharpness in ''Film/TheLordOfTheRings'' was going to be averted, until [[RealityIsUnrealistic test audiences had trouble accepting the absence of the trope]].

* AvoidTheDreadedGRating. In theory, this is because of profits. In practice, it's because it's presumed that any work that ''can'' be seen without moral qualms by anyone, regardless of age, is not worth seeing by adults ("children will watch ''[[ViewersAreMorons anything]]''").
** It's not theory and practice, it's cause and effect (not in that order). Childless adults who believe that a G rating equals "for kids" will cut into profits by not going to see the movie.

* DawsonCasting can sometimes be necessary for legal reasons. One example is from ''Literature/TheReader''; Michael Kross legally couldn't shoot his sex scenes with Kate Winslet until he had turned 18.

* DawsonCasting can sometimes be necessary for legal reasons. One example is from ''TheReader''; Michael Kross legally couldn't shoot his sex scenes with Kate Winslet until he had turned 18.

* AdaptationalBadass: when MassiveMultiplayerCrossover sets in the WorldOfBadass

* NotSoFastBucko is all but unavoidable in TV series if they run long enough.

* ArtificialGravity: Filming in real (on a "vomit comet" plane) or simulated (wire work and the like) microgravity is difficult and expensive, and realistic artificial gravity has serious shortcomings, so it's far easier to just HandWave the whole issue away.
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<<|TropeTropes|>>

* ArtificialGravity: Specifically, the "entire spaceship has earth-like gravity in one direction all the time" version seen in the vast majority of live action fictional media set in space. Filming in real (on a "vomit comet" plane) or simulated (wire work and the like) microgravity is difficult and expensive, and realistic artificial gravity has serious shortcomings, so it's far easier to just HandWave the whole issue away.

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