Experimentation is the engine of human progress. It has been for more than 5,000 years — ever since an inspired, but unknown lateral thinker in Mesopotamia discovered that the wheel, invented to make pots, could, stood it on its side with some spokes in it, serve as a mode of transport. The point that the right experiment, properly conducted, can be liberating, acting as an agent for positive change within society, an organisation and a company, has been reiterated countless times since.