We live in a pop age gone loco for retro and crazy for commemoration. Band re-formations and reunion tours, expanded reissues of classic albums and outtake-crammed box sets, remakes and sequels, tribute albums and mash-ups . . . But what happens when we run out of past? Are we heading toward a sort of cultural-ecological catastrophe, where the archival stream of pop history has been exhausted?
Sim...