The 1950s were not the 1970s. People lived in different parts of the county, they bought different products in different quantities, they consumed different amounts of power at different times of the day, they lived in different-sized houses, pursued different professions, and raised their children with different values. Yet the grid of the 1950s was in many ways the grid of the 1970s. And the grid of the 1970s was in many ways that of the 1990s. For the most part it is still our grid today.
Considering how much our population has grown since 1950, I'm surprised it even still works
