You don't think BD being about an astronaut(something Bono said back in 2000) or Elevation(take off) fit the theme?
This is called reaching and splitting hairs and grasping at straws, sorry.
Beautiful Day: Whatever its about, it is a pretty universal meaning about hope and seeing the good amidst adversity. I heard Bono say its about a man who has lost everything yet never been happier, etc, I have heard numerous interviews with Bono, Edge, Adam, Larry, the list goes on, offering other interpretations.
Moot point anyway, I never said it should leave the set.
Elevation: Half assed, on the fly reasoning here. The lyrics are throw away, about the feeling one gets from something undefined, and there is much more focus on just rhyming words to a jump up and down riff then there is any kind of theme. Just because they put the space ship effect after performances of it and yell "lift off" does not mean it ties any more into the theme.
I could do the same thing you just did:
A Sort of Homecoming: Going back to space? Back to the moon? Seeing the landscape below as we lift off?
In God's Country: Now its about JFK's dream and vision of an American ideal so great we can go to the moon.
Pride: Now about the Pride the astronauts on the 1st mission to the moon had.
Do you see what we can do here?
Elevation is not so fitting to the(pretty thrown together, undeveloped) theme as to cause major loss if it goes. In A Little While and the Major Tom intro are the only songs that are indispensable to the space theme.
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Not going to do a back and forth here for long.
The bottom line is you want your moles in holes with souls and I'll fight fate, loosen my lips, run on borderlands and dream beneath a desert sky any day of the week and twice on Sundays instead of that.
Sound like a good summary?