If it is true that total pool of currency needs to be able to grow with the economy then the rate one variable grows must be linked to the rate the other grows.
You're just repeating the same mistake. We both agree this is not true, as in the economy can grow while the currency pool stays constant. They change independent from each other. It's just really bad when they both don't grow on a similar scale. They only need to grow at the same rate in order to maintain a healthy growing economy. The relationship/link between them is that when they get too out of sync, there will be a correction.
The great depression was caused by a stock market over inflated with leverage. This has nothing to do with the gold standard.
https://en.wikipedia.org/wiki/Great_Depression#Attempts_to_return_to_the_Gold_Standard Again, facts and history disagrees with you. It's literally the very first on the list of causes lol
And notice how we have deviated from the topic of deflation.
You're certainly trying to, but I have not.
The great depression occurred because there was too much debt.
LOL. YES!!! DING DING DING! And how does deflation impact debt? Does it increase or decrease debt? https://en.wikipedia.org/wiki/Debt_deflation 😊
Kind of wild that you can admit that the worst economic downturn of all history was caused by debt, that deflation and inflation impact the way debt works, and in the very same paragraph say that "There is absolutely no evidence that deflation itself is bad." without a shred of self-reflection or irony. So, you understand that debt causes depressions, but simultaneously think an economic force that amplifies debt is totally harmless?? Make it make sense!!