Lyric discussion by wnk1111 

It's about causal determinism. en.wikipedia.org/wiki/Determinism

As others have referenced, the chorus is obviously a reference to an essay by Emerson, which says:

"What am I? What has my will done to make me that I am? Nothing. I have been floated into this thought, this hour, this connection of events, by secret currents of might and mind, and my ingenuity and wilfulness have not thwarted, have not aided to an appreciable degree."

Everyone's actions are just determined by their genes and environment. Everything that exists and happens today only does so because it was caused by something else, tracing all the way back to the beginning of the universe. We have all been "floated" to our current lives by a particular "series of events", free will is an illusion.

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