Society is very complex. Managing where there is complexity requires well designed data and analysis and simplification that does keeps the integrity of critical measures.
TVM's primary metric of progress is very simple. Is the situation better now than it was in the past? This is not a complex idea, but it will handle a complex situation.
In the image below, the value of the community is the same at the end of a period as it was at the beginning ... ordinary daily activities produce what is consumed ... it is a stable situation.
In this next case the value of the community is more at the end of a period than at the beginning of the period ... ordinary activities produce more than is consumed.
In this last case the value of the community is the less at the end of a period than at the beginning of the period ... ordinary activities produce less than is consumed.