
Allegedly, as pictured above:
The ingenious diagram shows a football pitch with simple icons showing whether a player is offside or not.Yep, so ingenious that a 50p coin clears all the confusion up.
Such nuances like not "interfering with play", or was he in a "passive position", or was it "second phase play" or giving the "benefit of the doubt" are irrelevant.
We're all simpletons apparently - thank god we have a 50p coin to let us know the rules of football.