system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: what is Keynsian economics?
gpt
In classical economics it’s all about supply and demand. If supply is higher then prices go down. If demand is higher then prices go up.

Keynes added the actions of a central government to the model, allowing management of overall demand, and preventing extremes of recession and inflation.

In other words, it recognises that governments aren’t exactly the same as other market participants, essentially because they also make the rules of the market.