between political society (via the administration) and civil society (via its administered subjects), through intermediaries in the form of devices that combine technical (measuring, calculating, the rule of law, procedure) and social components (representation, symbol). In most political systems, this instrumentation is expressed in a more or less standardized form a requirement for public policy and combines obligations, financial relations (for example, tax deductions or economic assistance) and methods of learning about populations (for example, statistical observations).