Guest post by Azizonomics.
Central planning — like war — never changes. It has always been a powerful and effective way of achieving an explicit objective (e.g. building a bridge, or a road), but one that has has always come with detrimental side-effects. And the more central planners try to minimise the side-effects, the more side-effects appear. And so the whack-a-mole goes on.
This was true in the days of Rome, too.