Mineral tax will live shorter. On top of that tax revenues for the government would be low, too. That leads to a Laffer curve-shaped function of tax revenue for the government, in which the “optimal level of taxation” is somewhere in the middle. Any mineral tax must be neutral. Neutral is defined as maintaining incentives for investors to exploit minerals. Therefore, the revenues must exceed the costs. Furthermore, the government must be able to rely on the amount of tax money it receives, therefore, the tax imposed must be as certain and as steady as possible. Often, governments decide to use a
From each according to his ability, to each according to his needs life but life's prime want". Marx explained his belief that, in such a society, each person would be motivated to work for the good of society despite the absence of a social mechanism "compelling" them to work, because work would have become a pleasurable and creative activity. Marx intended the initial part of his slogan, "from each according to his ability" to suggest not merely that each person should work as hard as they can, but that each person should best develop their particular talents. Claiming themselves to be at a "lower stage of communism" (i.e. "socialism", in line with