when i was reading this it felt that its about regrets.
something like you did something and later your conscience starts telling you "i told you so"
and i felt a hint of fight club on this.
Short and to the point-- always my fave. I feel this could easily be transferred to a haiku if you're interested in that kind of poetry. Is "our second shadow" another part of our identity? I think you're saying we're all fools, which I totally agree with :)