2 + 2 = 4 is a way of describing a physical phenomena, making it abstract and transferable among people, it may be demonstrated on the fingers, with arms and legs and anything found on the ground. By producing a problem 2 + 2 and offering the solution "green", we provide a distorted conundrum which needs deliberate and lateral thought in order to extract meaning. “1 + 3 = green” may be rationalised by thinking that 1 is equal to blue and 3 is equal to yellow, for example, but 2 + 2? For a pair of exact items to equal green we need to know first what is half of green. We stop blandly accepting and begin to be frustrated by language and the problems presented. This can lead to annoyance, we are conditioned to read the formula as nonsense, but it is ultimately liberating and offers the brain an opportunity to explore unknown areas of cognition.