Insight by History

Welfare policies can weaken family formation because benefits that reward single-parent status or penalize cohabitation create incentives for people to divorce or avoid marriage to secure aid.

Once in office, leaders reshape voting rules and districts to favor their supporting blocs because altering institutions lowers the cost of maintaining a coalition and raises barriers that make rivals' victory harder.

Large interconnected generators provide inertia because their spinning masses store kinetic energy that resists rapid frequency changes, which smooths spikes from faults or sudden load shifts.

In democracies, politicians reward voter blocs rather than individuals because winning requires mobilizing identifiable groups, so policies and subsidies are tailored to deliver group-specific benefits that secure votes.

Cities enable complex production because concentrated networks of thousands of specialized suppliers and workers let the many discrete inputs and processes required for goods like modern cars be coordinated far more efficiently than by isolated individuals.

Spending public resources on citizens weakens a ruler's hold because each unit spent on public goods is one less available to buy loyalty, enabling rivals to lure away supporters by promising the same benefits.

Cities make wealth possible because urban concentration cuts transaction and transport frictions, boosts specialization, and accelerates knowledge spillovers, which together amplify productive activity and output.

Middling regimes are most prone to revolution because they must extract enough from citizens to reward keys while still leaving citizens capable of revolt, creating a higher risk of upheaval than very rich autocracies or strong democracies.