Pro tip: do not ask monetary policy questions on ELI5. Most people who comment here are non-specialists, this is an extremely complex topic that is hard to break down in a way that’s easy to understand, and most of the attempts that are made are quite poor / misguided.
You’d be better off reading a very basic introductory college textbook on the topic that skips over the mathematical treatment of it. I recommend Greg Mankiw’s macro textbook, it’s pricey but I am positive you can snoop around the web for a free pdf
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