[quote=@Dynamo Frokane]
[@Dinh AaronMk]


3) Prices. Prices are a perfect way to signal supply and demand. It is impossible for a central planner to determine the preferences of each individual in a nation...but free pricing can.

 
[/quote]

This is the core of why communist countries fail and I have yet to see it addressed in a serious and detailed way by those who advocate for communist systems of government.