Lyric discussion by evede 

my interpretation:

koatis seems to think that evolution has stopped, i.e. "just be happy where we are" - ironically, this is the very attitude that vedder is railing against in this song.

It's about how foolish and arrogant modern man is, thinking we're so advanced, but look at us, we're not - we kill each other, we only care about money and material goods, and what other people think of us (see lyrics) - not very enlightened goals.

If some of us can NOT be greedy, jealous, and war-prone, but rather giving, accepting, and peaceful, then all of us can. But most are too lazy to try. This is what Evolution is supposed to be about - but as the song states, we don't get it - we think we're already evolved.

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