Lyric discussion by whatslifelike 

I think it's an anti-drug song.

The first verse is key: "the world will stay the same but your place in relation to it has changed," refers to hallucinations.

" And when the word begins to loose its power to restore and soothe" is about how you begin turning to drugs more and more for comfort.

"Well taxes now was once your wealth. When tucks and aches becomes your health," is basically about addiction, and how you begin to need the drug.

The next two verses just talk about the spread of the addiction, and how things are getting "blacker".

I'm not totally sure how the last verse relates, but there's my interpretation :)

An error occured.