DM dissects the physics of Puella Magi

DarkMirage has written a pretty comprehensive treatise blog post on why Kyubey’s “reversing entropy” explanation is pure bull-shitting cocks.

Kyubey can be thought of as the intergalactic equivalent of an oil field surveyor. Magical girls are precious resources, more literally than lolicons think. The battle between Puella Magi and their elder counterparts can be seen as a refinery process in which the full energy potential of crude emo is realized after being subjected to pressure and heat.

Given that Kyubey’s people have the ability to travel back in time, it should be possible for them to reverse entropy without the need for an extra-dimensional source of energy. In fact, directly addressing the problem in this manner should prove to be much more effective than using little girls like AAA batteries.

The solution employed by Kyubey and his advanced intergalactic civilization, which I estimate to be at least Type III on the Kardeshev scale, appears to be ad hoc, rudimentary and a mismatch to the level of technological sophistication they have demonstrated.

Really, the entropy explanation is extremely weak. Extremely.

Well, there’s still three weeks to go. Please don’t disappoint me, SHAFT/Urobuchi.


  1. feal87 Said,

    March 7, 2011 @ 12:23 am

    well, we’ll see soon enough what Shaft is up to…:P

  2. du5k Said,

    March 7, 2011 @ 12:52 am

    That doesn’t mean that Kyubei’s civilization have any way to counter or reverse entropy. And what if little girls are the most economic solution?

  3. Someone Said,

    March 7, 2011 @ 1:00 am

    The simple notion of traveling back in time is completely insane when you look at the laws of physics,time space and thermodynamics.. as is the entire existence of Mahou Shoujo..

    So why are they starting to nitpick now? Did anyone really expect a completly logical and realistic explanation to to this show.

  4. Kaisos Said,

    March 7, 2011 @ 1:31 am

    Yeah, I think the entropy bullshit is just that, bullshit.

    Kyubey was just using that as a justification for his creators setting up a perpetual motion machine than runs on souls. I’m sure he was hoping that Madoka would listen to ‘reason’ and contract with him after hearing that, but it didn’t work very well.

  5. Mentar Said,

    March 7, 2011 @ 2:01 am

    My former entry was ignored, I guess. So I’ll just copy what I wrote on Animesuki:

    “You really don’t get the joke? Then I’ll try to explain it – on the risk of being wrong. But I don’t think I am.

    In the _original_ unedited ep9 version, QB will most likely have stalled and stonewalled just like before, with some random Cover Your Ass story. But then, Urobuchi (who’s a fairly social guy and mingling with alot of colleagues) will have heard about the Star Driver twist, and thought “awesome, I can use that, we have some fun and free marketing along with it”, and changed the ep9 script to let QB tell the hair-raising entropy alien story. He read the boards and KNEW that people would gobble it up like manna from heaven (since we “knew” that QB never “lied”), and that they’d start to speculate into a completely wrong direction. And then he can enjoy the faces who go “WTF, the same happening in Star Driver??” – Shinbo confirmed that there were some last-minute changes to ep9. It must have been just that.

    Result: Lots of extra buzz for Star Driver, which gets linked to the hot Madoka franchise, and extra mentions for the latter, too. And Urobuchi Gen gets another total kick out of the joke, watching people go mad out of the initial misdirection of the trusting sheep. He LOVES to do that. He’ll rather go “amazing what you can make people believe, isn’t it?”

    Alternatively, feel free to believe that the SD scriptwriter and Urobuchi came to exactly the same story background idea independently. I don’t. “

  6. alex Said,

    March 7, 2011 @ 2:59 am

    QB is a timelord :)

  7. GBolt Said,

    March 7, 2011 @ 3:38 am

    I didn’t know he could travel in time. At least not in the “Back To The Future” manner…

  8. thecowgoesmoo Said,

    March 7, 2011 @ 3:54 am

    The most basic issue is why you would accept that emotional “energy” can be converted to physical energy in the first place when in real life so-called energy is merely metaphorical in nature, or that the otherworldly energy can somehow be conveyed into energy accessible to organisms in “normal” space-time via some reaction catalyzed via little girls. Once you accept that is realistic/”okay” you have already left the bounds of reality that can be explained by normal physics.

  9. Heero Yuy Said,

    March 7, 2011 @ 5:17 am

    At what point did QB say that his people could time travel? I mean, I may have missed it in the episode when I was watching to be honest, but if he didn’t the explanation that they can’t reverse entropy would still be plausible at least. Then the question comes in as to how he makes autocopies of himself whenever his main body dies… did Aozaki Touko teach him something?

  10. Onion Said,

    March 7, 2011 @ 6:09 am

    Sorry, no. Magic explains e’rythang.

  11. South Said,

    March 7, 2011 @ 6:38 am

    Yeah I don’t recall Kyubei saying he could travel time. Still I guess it would be annoying for them to travel back all the time….except they don’t have feelings or something so, why would they even want to survive in the first place. I can’t imagine them going shopping.

  12. South Said,

    March 7, 2011 @ 6:42 am

    Ah, now I read DM’s post. He is assuming he can travel back in time…Homura does, but I’m sure it’s because of the contract she can do so. I doubt Kyubeis will enter a contract to travel back in time (plus, it’s like they are a one cell kind of thing, the other eating the old Kyubei and all).

  13. AidanAK47 Said,

    March 7, 2011 @ 9:41 am


    I hope you are right. The whole alien entropy deal never sat well with me. It killed off what made Kyubey so damn interesting. I like to think of Kyubey as the manipulative demon. Has much more appeal than just some Alien.

    If it turns out to be some bullshit Kyubey threw out on the spot then honestly I would be glad. Maybe Gen got pissed that everyone found out the Magical girls turn into witches twist before it was unveiled. So he said “Lets see how you deal with this” and threw out this random twist. Now most of the theories have been discredited. So while we are busy thinking on the wrong track he’s ready to chuck out a twist we will never expect or predict.

  14. Skribulous Said,

    March 7, 2011 @ 1:26 pm

    QB lies, girls die.

    Fine, QB is an alien, and by his standards he’s doing a noble endeavor.

    But still, by OUR human standards, he’s still a filthy manipulative bastard.

    Madoka, let the universe end. We all die sometime, anyway.

  15. Tiresias Said,

    March 7, 2011 @ 6:36 pm

    So…QB is evil Doraemon???

  16. Logeres Said,

    March 7, 2011 @ 7:46 pm

    I’m surprised that there are still people who believe a single word Kyubey says. Hell, the whole point of the episode was to show that Kyubey is, in fact, capable of telling lies with his claim that there is a chance Miki Sayaka could be saved, even though he knew that this is impossible. This means that at least one point of his exposition is definitely a complete lie – and why should he lie to Madoka about being incapable of tricking people, if not to hide that fact that he is doing exactly that?

  17. Tiresias Said,

    March 7, 2011 @ 10:01 pm

    @Logeres: Because he likes to play Kotomine Kirei?

  18. updatedude Said,

    March 8, 2011 @ 3:20 am

    Assuming he’s telling the truth, then there’s a pretty major weakness in his whole plan to force Madoka into accepting the contract by setting up a situation where she either becomes a MG or allows thousands, possibly millions of people get killed in what seems to be a Witch invasion thingamabob.

    And that’s that it’s make more sense to just harvest those thousands or even millions of people rather than just this one girl. Sure, she’s got the potential to be the biggest angsty emo whiner of all time, but surely the low grade emo of the general populace would suffice via sheer volume.

  19. InvalidName Said,

    March 8, 2011 @ 4:19 am

    > Hell, the whole point of the episode was to show that Kyubey is, in fact, capable of telling lies with his claim that there is a chance Miki Sayaka could be saved, even though he knew that this is impossible.
    He did not necessarily lie there. He told Kyouko that there was no way he knew of, to get back Sayaka’s soul gem. When she asked him, if there might be a way he does not know, he dodged the question and answered, that the existence of magical girls itself is against reason, so no matter what unreasonable actions they might take, he won’t be surprised. When Kyouko says that this must mean that there is a way, QB says that there is no precedent, so he knows of no method. Later he claims towards Homura that it was obviously impossible. This is not a contradiction to what he said before, for reasonable values of “impossible”. It is likely that his civilization investigated the matter of magical girls quite in-depth and found no way to turn them back, but proving the non-existence of such a method is not possible either. Devil’s proof and all that.

  20. Ghostalker Said,

    March 8, 2011 @ 6:41 pm

    Jeez, I can’t understand all the whining about Kyubei’s revelation, just a few weeks ago people are complaining that the series is becoming predictable because some few theories are correct compare to how many theories are created, then they are complaining again because what some people expecting about Kyubei doesn’t turned out the way they are expecting it. It is sad when people who absolutely have to find something to complain about can only come up with this. But I guess people will complain of something as always because it’s either “its to predictable” or “it is noting they are expecting it to be.”

  21. North2 Said,

    March 8, 2011 @ 8:15 pm

    My main problem with it is that it’s just too ‘out there’.

    My prediction since Episode 2 is that Homura is future Madoka who came back in time to stop herself from becoming a magical girl, mainly just from watching the opening sequence. I didn’t need a single drop of logic for the prediction, and I don’t need a single drop of logic now.

    I can easily imagine my prediction actually being right, and everything fixes itself when Madoka and Homura fuses together to create a giant space-time distortion that warps the fate of the universe and avoids entropy death. This stupid prediction is probably going to sound just as feasible as what’s actually going to happen in the show. That’s pretty much what this revelation felt like – just complete ‘talking out of his ass’.

    I will end up being very satisfied with the show if QB was, in fact, completely bullshitting from start to finish.

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