Bottom up and top down – approaches
- Top-down and bottom-up are both strategies of information processing and knowledge ordering, used in a variety of fields including software, humanistic and scientific theories (see systemics), and management and organization. In practice, they can be seen as a style of thinking, teaching, or leadership.
- A top-down approach (also known as stepwise design and in some cases used as a synonym of decomposition) is essentially the breaking down of a system to gain insight into its compositional sub-systems in a reverse engineering fashion. In a top-down approach an overview of the system is formulated, specifying, but not detailing, any first-level subsystems.
- A bottom-up approach is the piecing together of systems to give rise to more complex systems, thus making the original systems sub-systems of the emergent system. Bottom-up processing is a type of information processing based on incoming data from the environment to form a perception. From a cognitive psychology perspective, information enters the eyes in one direction (sensory input, or the ”bottom”), and is then turned into an image by the brain that can be interpreted and recognized as a perception (output that is ”built up” from processing to final cognition). In a bottom-up approach the individual base elements of the system are first specified in great detail.
Fig 1: Top down & bottom up for Climate change.
Resource Based Economy
In society there are suppliers and customers and other persons and organizations (systems), which need service. All resources can accelerate wealth, although some resources are most productive and some are not productive at all. However, there are rules of democracy as a responsibility to take care of systems that don’t increase common wealth. Society should maximize use of its resources in the same way as the companies do.
Value based leadership for society resources
The Barrett model (Fig 2) creates for society a certain kind of long feedback until the next elections. In varying conditions there are certain roles for persons to manage, organize, have influence and to direct business into the vision. The critical threshold here is the selection: to be competitive and closed outwards or more open and co-operative in modern ecosystems (level 7: Service).
Fig 2: Types of persons to promote leadership in their roles.