Originally posted by germcevoy:How can you know he does it a lot if you can only quote one instance?
Because I listen through hundreds of bootlegs constantly, to see what songs are worth saving, and I was actually surprised by how often he does make some kind of lyrical error. They're usually nothing major but they tend to ruin one's impression of a performance. The most errors are found in the Zoo-tv and Boy-The Unforgettable fire eras. More recent shows feature less errors, in my experience.
The reason I didn't give any more examples is that I rarely ever know the show in question (since i don't save those versions in which Bono does sing wrong in some way). However, here are a few more examples:
1992-09-09, Pontiac, Michigan, Bullet the blue sky, first verse (mix-up)
Unknown war tour show - new year's day, ----------"--------------------
Two different unknown october tour, I threw a brick through a window (forgets the lyrics after the part "no one is blinder")
Washington 1992-08-16, replaces "secret" in the second verse with "light-bulb" which isn't supposed to be until later
Unknown vertigo show, sings "all you americans" to a european crowd
Two different unknown war show, forgets the lyrics for the snippet "Let's twist again" at the end of the performance of "Two hearts beat as one".