Until fairly recently economists envisaged three stages of economic development.
First, there was the stage of capital accumulation started by the industrial revolution. The Marxist historian Eric Hobsbawm called it the age of capital. Society saved a large part of its income to invest in capital equipment. The world gradually filled up with capital goods.
This stage, economists thought, would be followed by the age of consumption, in which people began realising the fruits of their previous frugality. They would save less and consume more, as the returns to new investment fell and the possibilities of consumption expanded.
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