This kind of graph is good for a PowerPoint presentation.
Not really useful for real life planning and desisions on manufacturing and business processes.
Learn why, and read more about Process Oriented Analysis by:
Graphische Methoden der Prozessanalyse, Hanser Verlag, or
Process Oriented Analysis, CRC Press, or
contact Andartis AG, Regensdorf, Switzerland, http://www.andartis.ch
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