"It's about the experience of looking rather than touching. I think my favourite image is the image of glass, where he melts the sand so he can see the world outside." - Bono on "Lemon"
did you know
The Popmart stage design, which looked like a supermarket, appealed to Bono as a supermarket, with its myriad choices and temptations, could function as a metaphor for U2's songs, as they often deal with the struggle between desire and faith.