Why might a socialist society have a less rigid command economy than a communist society?

A socialist society often has a less rigid command economy than a communist society because in a socialist country there are various political systems that may be combined with the public control of the economy. On the other hand, communist societies have no private property; therefore, the government makes all decisions involving the economy.  

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forests are public goods, available for everybody. when usage of such a good becomes interesting for consumers and its usage increases, there can be a risk of overexploitation. it is a non rival good therefore, if one person consumes the good it does not reduce the availability for subsequent consumers.

these caracteristics require the establishment of measures in order to prevent the destruction of a commonly owned space, for example, to restrict the amount of people that have access to the same time.

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