No, not this song, which is also utopian. Instead, imagine stripping all emotion out of behavior and decision-making.
When I present this thought experiment to students, it's immediately followed up with the statement that we'd be left with Spock or a group of Spocks. Thankfully, there is more to man than strict and cold calculation, but let's zoom in and look at homo economicus for a while. That, to some extent, is intermediate micro.
Though we know people have emotion, let's suppose for a second social planners (or blobs from another planet!) were able to strip emotion out of decisions. What would society look like?
My Friday night movie choice for last night, Invasion of the Body Snatchers, tells us something about what this utopia would look like, as well as what the transition period from emotional man to rational man would be like. Check it out (the 1978 version in particular) if you're struggling to find a good movie!
The movie is thought to be commenting on communism and/or McCarthyism. It's one of the best '70s movies I've ever watched, and you'll even see that Spock plays a significant part in the movie!