Little Busters episode 17, the zero sum game?

Zero sum game: a situation in which one's win is matched by another's loss.
i think it comes business and/or economics.

In a way it's kind of like saying, "for every action, there is an equal reaction" or something like that. In context of business, if your business is doing well, then there is a business out there who is doing equally as bad.
Now instead of businesses and their success, replace that with happiness, and you get what futaki-san was talking about.
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Futaki-san: Naoe Riki. Don't you think life is a zero sum game? Do you think the amount of happiness is constant? Let's say the amount of happiness and unhappiness in the world is fixed. Life is a game where if one person becomes happy, another becomes unhappy. Everyone think's they're the most unhappy. And everyone who thinks they're unhappy, think everyone else is happy.
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When i first watched this episode when it came out subbed, i started thinking of the zero sum game like how in science, matter is never destroyed or created, the amount of matter on the Earth will never change. So instead of matter, think of happiness. (Think of happiness itself as a material thing) There's only a limited amount of happiness in the world and everyone strives for that happiness, but not everyone gets it. So while you're on the way to obtain that happiness, there are people who are unhappy and fall behind you. New happiness can't be created, the amount of happiness in the world is what you're stuck with and the meaning of life is to aim for that happiness.
For all the happiness you experience, there is someone out there suffering that same amount.
You can think that humans are naturally selfish beings. There is no such thing as being completely selfless because you always get something out of your actions whether or not you're aware. There is no such thing as selflessness, everyone is selfish. It's not always a bad thing. Because of selfishness, humans have evolved incredibly since the beginning because humans always strived for knowledge and ways to make life better and easier. So, because humans are selfish, we would do anything for happiness and to protect that happiness, hence we hurt others in the process (if you want to talk about the zero sum game as something that happens directly, but it can also be interpreted indirectly like what i say about 'For all the happiness you experience, there is someone out there suffering that same amount.'. Because that person who is suffering, you may not even know)

What i wrote up here sounds kind of bad lol, kind of like a bad outlook on life.
But i really do believe that the meaning of life is to be happy. Not in dark way as said above haha.


So Futaki san is talking to Riki and explains to him how he sees herself and haruka. How, ever since they were born it was impossible for the both of them to be happy. And near the end she says something about how people who sees themselves as unhappy see others as happy, and i think she was talking about haruka. Haruka always saw Futaki san as the lucky one, the one that was treated a whole lot better than her, in Haruka's eyes, and Haruka started despising her own existence because of that.
Because of their circumstances only one could be "happy". And he fact that they are twins makes it have even more of an impact on the zero sum game theory. Since they're twins you could see them as one person, so shouldn't they both be happy or unhappy together? No. Only one can, while the other suffers. In a close zero sum game situation between two people like this, it is even more evident of how accurate the zero sum game is. While Futaki san is seemingly happy, at least happier than Haruka, Haruka was beat and treated horribly only because of accusations without any hard proof. (don't want to put any spoilers =P)

This reaccuring "theme"(? if my english teacher saw me call this a theme i would get an earful lol, but i really don't consider this a theme. A motif maybe? Something that reoccurs many times thoughout something, in this case anime and manga) can be seen in many animes. Example, Kamichama Karin. The two Himekas, when one is well the other is sick. They were never meant to be in the same world together so both can't be well at the same to, as a way to keep balance. That's the way i see it now when i think back on that anime the i watched many years ago lol.

Pretty lengthy post today, thought provoking i guess haha
again, these are just my thoughts.
Thanks for reading all the way down here, i hope
PEACE~ ☆⌒(*＾-°)v