The economic theory was bad. The SSET demonstrates that economic theory must be built on the basis of relative subjective values (utility), not in terms of prices (supply and demand). The failure of current economic theory (classic-neoclassical) emerges from being based on the theory of "objective value".The socio-political confusion between the technological advance (son of the hard sciences) and social crises (with epicenter in the failure of economic theory), will have a solution in the light of the Subjective and Solidarity Economic Theory (SSET). The TESS refutes, among other things, the manifestation of J.S. MILL referred to that "the theory of value and prices was complete", as well as that the value is not measurable.