inflate their currency
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Economic forecasts are not useful at all, because the margin of error is extremely high (apparently that's not criticized often, because absolute numbers are always very low). How often have forecasts met expectations in the past? I have the feeling there's always surprise on the downside ("disappointment"). Possibly because positive economic forecasts are used as a psychological tool to encourage economic activity.
The current fiat system depends on growth. Not simply linear, but exponential growth (= growth of growth), because it is based on debt money. But in a world of limited resources, growth can not go on exponentially forever. We are now entering a phase where this becomes apparent. Of course the current actors of the fiat system have to play their role and pretend that there's no problem. But they can't escape the laws of nature.
ya.ya.yo!
Economic growth is one way to bail out inflated currency. Another way (and this helps only "core" currencies like USD and EUR) is the imperial system that forces developing countries to accept Western paper and ship us real goods at cheap prices. This is sometimes done with the political and military influence of the West, but most of the time it's done through the "exorbitant privilege" of reserve currencies that basically makes developing countries suffer most of the financial instability and economic pain of Western currency inflation.
No, the world is not fair. But while this process protects Western currencies from crashing totally, it might not be enough to bring demand back to "normal" after a big financial bust like the Great Depression and the 2008 crisis.
The longer things drag on in this muddling-through mode, the more likely the Western elites will be forced to peg currency again to gold, bitcoin or some other cryptocurrency, at a very high price, in order to give themselves the financial room to push stimulus more aggressively. This would basically amount to a cancellation of past debt and starting afresh with paper currency. Of course, they will not announce this intention until the very last minute. (For this to be done with a cryptocurrency, I imagine the price of bitcoin first has to go high and stay there for a while.)