So at what point would printing trillions of dollars have an effect?
If we just gave everyone 10k a month, would inflation occur then?
For a start, when interest rates are not at (effective) zero:
* https://en.wikipedia.org/wiki/Zero_lower_bound
* https://en.wikipedia.org/wiki/Liquidity_trap
In an independent, competently run central bank "money printing" generally only occurs during economic disasters, where the first thing that is generally done is that the central bank reserve rate gets cut.
Further, it should also be recognized that 99% of the "money" that is created in modern financial systems is done by private banks when they issue loans:
* https://papers.ssrn.com/sol3/papers.cfm?abstract_id=1905625
There are a bunch of myths about what "money printing" actually is:
* https://www.pragcap.com/everything-wrong-with-the-money-prin...