If only there were world simulations where economic crashes have much lighter consequences, where economists could literally run A/B tests of their theories. O

If only there were world simulations where economic crashes have much lighter consequences, where economists could literally run A/B tests of their theories. Of course, for those to be possible you would need a vast connection infrastructure spanning the globe, and many millions of people willing to participate (perhaps because the world simulations are clothed in cultural common places and so are disguised as "fun"), and something of value that they are willing to trade in earnest. Then you could run all sorts of fun economic experiments there and prove theories via A/B tests. I wonder if the idea will catch on. I hope it's not held back by a perception that those world simulations are not serious enough for real science to be done.