Society et al.

[The One and Only...]

In order for the capability of a society to be maximized the public sector must take over what it can do more efficiently than the private sector, and the private sector must take over what it can do more efficiently than the public sector.

Ultimately, this leaves a small number of functions for government, as most things operate better under non-monopolous conditions and wealth redistribution plans frequently backfire. Among these are national defense, police, courts, fiat currency (provided strict guidelines for the monetary bases growth), and possibly roads in addition to minimal societal welfare to prevent the growth of discontent.