I think that one of the most wonderful things about marketing is that you can create huge amounts of delight, memorability, and distraction with relatively small levels of expenditure. Organisations, businesses, and governments often seek grandiose solutions, overlooking the fact that small things can also have a profound impact human behaviour. Encouraging people to make better choices has a greater influence than using punishment as a deterrent. Most human actions deviate from physical laws, and are often disproportionate in nature, unlike the predictability of physics. The correlation between ‘Input A’ and ‘Output B’ is usually insignificant in human behaviour and can even be contradictory.