Agreeing that a town needs clean water does not build and maintain its water system. Someone must establish responsibilities, collect resources, resolve disputes, and ensure that promises survive changes of leadership. Government organizes authority over shared affairs at a scale where voluntary agreement alone may be difficult.
Its work combines decision-making with administration. A law, a budget, and a service are different parts of the process: approving expenditure does not ensure that a trained team or functioning supply chain exists to deliver it.
Authority has to become capability
Effective public action depends on commitment, coordination, and cooperation. A government must make agreements credible, connect agencies whose work depends on one another, and secure enough cooperation for decisions to take effect. Formal powers can exist without these capabilities.
Public authority also creates opportunities for exclusion and capture. The people who negotiate a policy may differ from those who bear its costs. A technically sensible proposal can fail because powerful participants oppose it, while a harmful arrangement can persist because it protects their position.
Understanding government therefore means following a decision beyond the announcement: through funding, staffing, implementation, and routes of challenge. The central question is how collective authority becomes reliable action while remaining answerable to the people affected.