Drawing on a large body of empirical research, Lahlou shows that people’s behaviour is predictable and shaped by ‘installations’ combining three sets of factors: what is technically possible (affordances of the environment), what people are able to do (embodied competences), and what monitors and controls behaviour (social regulation). These channel our behaviour and incline us to act one way or another in specific circumstances - in the way, for example, that when you travel by plane, the steps you take from the moment you check in to the moment you take your seat are fixed and predictable.