Keynesianism is an economic theory whose core idea is that the government should play a more active role in the economy by stimulating economic growth through measures such as increasing public expenditure and reducing taxes, thereby addressing issues such as unemployment and economic imbalances.

Specifically, Keynesianism puts forward the following viewpoints:

Firstly, the market economy is plagued by unemployment and economic imbalances. This is because the self-regulating mechanism of the market economy is imperfect, leading to large fluctuations in the economic cycle, high unemployment rates, and issues of unequal income distribution.

Secondly, the government can stimulate economic growth by increasing public expenditure and reducing taxes. For example, measures such as increasing infrastructure construction, improving social welfare levels, and tax cuts can promote consumption and investment, thereby creating employment opportunities and improving living standards.

Finally, Keynesianism also emphasizes the important role and responsibilities of the government in the economy. The government should not only focus on short-term economic fluctuations but also consider long-term economic stability and social fairness issues. Therefore, when formulating economic policies, the government should fully consider the interests and needs of society.

In summary, Keynesianism is an important economic theory that emphasizes the active role and responsibilities of the government in the economy. In practical applications, the government should adopt appropriate intervention measures based on specific conditions to achieve the objectives of macroeconomic policies.

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