“Is it not truly extraordinary to realise that ever since men have walked, no-one has ever asked why they walk, how they walk, whether they walk, whether they might walk better, what they achieve by walking, whether they might not have the means to regulate, change or analyse their walk: questions that bear on all the systems of philosophy, psychology and politics with which the world is preoccupied? Honoré de Balzac (1938 [1833]:”