system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Now that we have hudreds of years of history to look back on, on top of computer technology--why is there such debate on how an economy should be run?

I would think we could look throughout time and see things like varying tax rates vs. a countries economic performance (among hundreds of other economic factors) to figure out the proper way to run an economy. Is the fact that we have a huge globally connected economy and contact changes in technology the issue?
gpt
This is like saying that by now we should have more than enough data to fully understand and build a human brain.  No. Just no. 

An economy is a horrendously complex thing. You can't just look at a few variables like that and decide that you've figured it out.  That would be very much like deciding that since we've figured out some relationships between blood pressure and heart disease or between hormone levels and whatever that we should now understand all of human medicine. 

Some of the most brilliant mathematicians alive have devoted their lives to trying to model various bits of the markets, and none of them would have the hubris to claim that they've come up with a rigorous theoretical model that explains economics.