answer:
The lyricist, Brandon Flowers, has explained that the line "Are we human, or are we dancer?" is actually a misquote of a Hunter S. Thompson quote, where Thompson referred to America becoming a "nation of dancers" rather than individuals. Flowers interpreted this to mean that we are becoming less individualistic and more homogenized, so the question "Are we human, or are we dancer?" is meant to be a metaphorical question about whether we are losing our individuality and becoming too much like everyone else.
