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===Song title===

In game theory and economic theory, zero-sum describes a situation in which a participant's gain or loss is exactly balanced by the losses or gains of the other participant(s). It is so named because when the total gains of the participants are added up, and the total losses are subtracted, they will sum to zero. The strategy game Go is an example of a zero-sum game.

As a reference to the end of the world, the title could also be alluding to the phrase "ashes to ashes, dust to dust". The phrase comes from the Bible passages "Dust thou art, and unto dust thou shalt return" (Genesis 3:19) and "I will bring thee to ashes upon the earth in the sight of all them that behold thee" (Ezekiel 28:18), the relation to the song being that humanity was born from nothing and to nothing it will return, a total gain of nothing or "zero-sum".