About ninety years ago, Lewin (Hirsch and Smale in Differential equations, dynamical systems, and linear algebra, Academic Press, 1974; Lewin, K. (1933). Environmental forces in child behavior and development. In Murchison, C. (Ed.), Handbook of Child Psychology. Worcester: Clark University Press.;) introduced various dynamic concepts such as social force fieldSocial force field, equilibriumEquilibrium, and barrierBarrier, to explain the psychological influence of environment on the behavior and development of children, tried to develop a new geometry which he termed hodological spaceHodological space, and proposed a topological psychologyTopological psychology (Lewin (Lewin in Principles of topological psychology, McGraw-Hill, 1936)).