system
Given the following post, respond as if you're commenting on Reddit:
human
What aspect of modern economy would stop working if all people knew about it?
gpt
Although it's empirically unclear how much of monetary policy's 'strength' is due to information frictions, it's certainly a non-zero portion. If everyone were able to precisely see through the 'money illusion', we would probably see monetary policy lose some of it's power.

In general though, it's hard to find an answer to this question. Prices communicate information. Individual businesses/households don't need to know the full details of the inner workings of the economy to make optimal decisions. They simply need to know the prices that they personally face.