This tool is used to have a better view of the system (global view) to be analysed through its MUF.
It is a good strategic tool, and must be used in the very early stages.
There are nine cases represented. In reality it can have more cases, by adding an axe
3 axes
The horizontal axe: Time axe.
The left column: the past
The central column: the present
The right columm: the future
The time between left and central column, and between central and right column must be equal
The vertical axe: Systemic axe
The top line: the super systems (past, actual, future)
The central line: the system (past, actual, future)
The bottom line: the sub systems (past, actual, future)
The Z- axe (perpendicular to the 2 other): Anti-system axe
On this axe, we define what are the anti-systems to the system. What system will be able to stop the evolution of the system
Put the actual system on the central case.
Identify the different parameters of the system, and their values
Make the same job with the past system (stages 1 and 2)
Identify the evolutions of the parameters between past and actual: stable, increase, decrease
Make the same job (from 1 to 4) with the super-systems, and with the sub-systems
Identify anti systems, and its parameters
Make a projection
How will the super-system evolve ? Without super-system, there is no system. So verify that your super-system will exist in the future...
How will parameters evolve?
For she system
For the super system
For the sub system
All these hypothesis will give you the way to the solution.
For the future, don't forget to use ideality, laws of evolution,...