There are a number of systems that must run in a loop. When that loop stalls, because labor is part of that loop, and illiquidity occurs, and people can't get food. You get a deflationary spiral, and everything breaks down from there. The only offset would be printing a massive amount of money, but then you have rational pricing (that cost vs the product) go out the window. Rational pricing is required to properly allocate resources in a scarce world. Its a very fine balance keeping enough liquidity in the economy so this doesn't happen, and we've all see how well that's turned out.
This leads to the economic calculation problem where the policy maker has to balance on a knifes edge using lagging indicators (without futuresight), where you either get hyper-inflationary currency death spiral, or you get a deflationary death spiral from the ever closer margins over time.
This has been a known problem for over 100 years, with no solution found. Several non-market socialist economies based on this have failed in that time, each time caused death on a large scale, what do you think will happen when its the reserve currency of the world and you do this?