Okay, I have a theory. Full Metal Jacket and Native son were originally two different songs. They then merged into one song called Native Son. Native Son was then reworked into Vergtigo. The following quotes back up this theory:
Bono: "Edge brought around a CD of a new tune. It's just a provision title, "Full Metal Jacket." It's the roughest, it's the mother of all rock and roll tunes. I don't know where it came from, but it's a remarkable guitar thing. You want to hear it. It's a reason to make a record. This song is that good." - November 4, 2002
Bono: "We've got a song up on the burner called 'Native Son.' The best way I think we can celebrate is to just finish out what we're doing: Make this song a scorching 45. The molecules in the air are vibrating quite nicely as a result of that phone call." - Feb 14, 2003
Edge: "Full Metal Jacket is there....it married another track and had a baby which is on the LP" - September 27, 2004
Adam on "Vertigo": "It was originally called Native Son and had a very different feel. Bono and Edge rewrote it when we started work with Steve Lillywhite. The bass and drums have a little bit of Echo & the Bunnymen in there - a nice wink to where we came from." - October 1, 2004
So FMJ is the mother of all rock tunes, Native Son is the father of all rock tunes, and Vertigo is the baby of all rock tunes!
Bono: "Edge brought around a CD of a new tune. It's just a provision title, "Full Metal Jacket." It's the roughest, it's the mother of all rock and roll tunes. I don't know where it came from, but it's a remarkable guitar thing. You want to hear it. It's a reason to make a record. This song is that good." - November 4, 2002
Bono: "We've got a song up on the burner called 'Native Son.' The best way I think we can celebrate is to just finish out what we're doing: Make this song a scorching 45. The molecules in the air are vibrating quite nicely as a result of that phone call." - Feb 14, 2003
Edge: "Full Metal Jacket is there....it married another track and had a baby which is on the LP" - September 27, 2004
Adam on "Vertigo": "It was originally called Native Son and had a very different feel. Bono and Edge rewrote it when we started work with Steve Lillywhite. The bass and drums have a little bit of Echo & the Bunnymen in there - a nice wink to where we came from." - October 1, 2004
So FMJ is the mother of all rock tunes, Native Son is the father of all rock tunes, and Vertigo is the baby of all rock tunes!