Jeff,
"Eleanor Rigby" is bad, but "Imagine" is much worse. When I taught economics to homeschoolers, we analysed "Imagine":
Imagine there's no heaven = atheism
Imagine all the people living for today = high time preference
Nothing to kill or die for = nihilism
Imagine no possesions = no private property
etc.
We read it in parallel with The Communist Manifesto.
