The Game theory approach is mathematical rather than economic. John Nash may have received the Nobel Prize for economy in 1994 for his works in the Game theory, but he is a mathematician. And as a mathematician he studied the numbers theory, the diophantine equations, the quantum mechanics and the theory of relativity.
And the consept of the method which was to be called Nash-Moser, to solve a major problem of differential geometry about the multiplicity of Riemann, has certainly nothing to do with the economy.
So there is no need for us to listen to every economist explaining to us, that he is an expert of Game theory, because he is an economist, and that we must actually believe it. The Game theory is a branch of mathematics and has applications in various fields, and not only in economy.
In actual fact, in this field there are many experts, who not only are not convinced about the value of this theory, but they actually not even possess the subject. Therefore, we must be very careful, since this has an impact on our strategic behaviour, which is a crucial notion also in the theory. There is no need for us to be affected by unspecific statements.
Because there are some, who see ‘Koum-kan’ and they think it’s a Game, and others, who are playing the “three card monte”, or “priest” without a church. In reality, things are more complicated, and we see that in the encodings of Game theory. Life is not a chess game, it’s not zero-sum, but to think that you will make do without chess, is not a good roll, even for backgammon. That’s what’s also applicable for the Game theory.