F.A. Hayek, The Road to Serfdom

It may the unanimously expressed will of the people that its parliament should prepare a comprehensive economic plan, yet neither the people nor its representatives need therefore be able to agree on any particular plan. The inability of democratic assemblies to carry out what seems to be a clear mandate of the people will inevitably cause dissatisfaction with democratic institutions. Parliaments come to be regarded as ineffective "talking shops," unable or incompetent to carry out the tasks for which they have been chosen. The conviction grows that if efficient planning is to be done, the direction must be "taken out of politics" and placed in the hands of experts -- permanent officials or independent autonomous bodies.

[. . .]

It is important clearly to see the causes of this admitted ineffectiveness of parliaments when it comes to a detailed administration of the economic affairs of a nation. The fault is neither with the individual representatives nor with parliamentary institutions as such but with the contradictions inherent in the task with which they are charged. They are not asked to act where they can agree, but to produce agreement on everything -- the whole direction of the resources of the nation. For such a task the system of majority decision is, however, not suited. Majorities will be found where it is a choice between limited alternatives; but it is a superstition to believe that there must be a majority view on everything. There is no reason why there should be a majority in favor of any one of the different possible courses of positive action if their number is legion. Every member of the legislative assembly might prefer some particular plan for the direction of economic activity to no plan, yet no one plan may appear preferable to a majority to no plan at all.

Nor can a coherent plan be achieved by breaking it up into parts and voting on particular issues. A democratic assembly voting and amending a comprehensive economic plan clause by clause, as it deliberates on an ordinary bill, makes nonsense. An economic plan, to deserve the name, must have a unitary conception. Even if a parliament could, proceeding step by step, agree on some scheme, it would certainly in the end satisfy nobody. A complex whole in which all the parts must be most carefully adjusted to each other cannot be achieved through a compromise between conflicting views. To draw up an economic plan in this fashion is even less possible than, for example, successfully to plan a military campaign by democratic procedure. As in strategy it would become inevitable to delegate the task to the experts.

[Chapter Five: Planning and Democracy]