"This song was written in a hotel room in New York City 'round about the time a friend of ours, Little Steven, was putting together a record of Artists Against Apartheid."
- Bono introducting the song Silver and Gold.
did you know
The lyric "3:33 when the numbers fell off the clock face" from Unknown Caller is a reference to the Bible verse Jeremiah 33:3. Bono refers to it as "God's phone number".