"Anything that happens, happens.
Anything that, in happening, causes something else to happen, causes something else to happen.
Anything that, in happening, happens again, happens again.
It doesn’t necessarily happen in chronological order, though."
Iron Man 3 might have enjoyed the second biggest opening weekend in US box office history, but with Robert Downey Jr.’s contract now expired, the status of a potential fourth film remains clouded in uncertainty…