Lyric discussion by shannoninlimbo 

Cover art for Debate Exposes Doubt lyrics by Death Cab for Cutie

because he says "the impossiblity of one to love unconditionally and the words that we drive into the ground: their repetition starts to thin their meaning." i would agree that hes talking about the words I love you and how they get used without the real context. but when he starts talking about the couple that walks in and how amazingly perfect they are, and how he can see on everyones face (even if they look different) theyre thinking the same thing, i believe he realizes that their IS love unconditional and he doesnt have it, but he knows its there. then he thinks, thats clarity, it makes sense, "BUT" every night ends the same and hes by the others side that doesnt make as much sense. and he alone is staggering. not the girl. him. meaning he knows their is more in life to have, and she thinks she has it cause but he knows better.