Given this broad definition, "development" is a multi-dimensional concept in its nature, because any improvement of complex systems, as indeed actual socio-economic system are,can occur in different parts or ways,at different speeds and driven by different forces. Additionally,the development of one part of the system may be detrimental to the development of other parts, giving rise to conflicting objectives (trade-offs) and consequently , measuring development, i.e. determining whether and to what extent a system is developing, is an intrinsically multidimensional exercise.