The paper deals with the problem of transversal reason as the concept of W.Welsch’s theory, which opens new horizons for intellectual strategies building. The central idea of the paper is transition and transitional states between different types of rationality. The author underlines that transitions, terminals, differences, relations form the environment of the complex thinking as a transversal one. It is actually the detection of transitions. The concepts of transversal reason have considerable heuristic potential in the present conditions of different positions existence.