what about bukake?

I don't see how Einstein sticking out his tongue or a picture Ansel Adams took of a river are more influential than the Twin Towers collapsing, the flag raising at Iwo Jima, the wreckage of the Oklahoma City Federal Building, the wreckage of United Airlines flight 93, "Napalm Girl", "Earth Rise", "First Flight", the Challenger explosion, the Columbia burning up, the fall of the Berlin Wall, Tienenman Square, the mushroom clouds formed by 'Fat Man' or 'Little Boy', or a slew of other substantial photographs. Why limit the list to 13?