From the Ask Tom mailbag – Part 3 of 4
- S-I (1 day – 3 months) Declarative (Concrete)
- S-II (3 months to 12 months) Cumulative (Concrete)
- S-III (1 year to 2 years) Serial (Concrete)
- S-IV (2 years to 5 years) Parallel (Concrete)
The cumulative thinker wakes up one morning and sees the world in a whole new way. Not only are things in the world connected, but there are cause-and-effect relationships between them.
If this is the case, then this must be the result.
One thing causes another thing to occur. This is the state of thinking required to be effective at creating single serial systems. There is end to end accountability for the effectiveness of the system at this level of work.
Decision making and problem solving not only requires an understanding of steps to be included, but the duration of each step, sequence of steps, which steps depend on other steps to be completed (dependent steps), which steps may be worked on simultaneously (concurrent steps), lead times for steps and critical path. Trouble-shooting (problem solving) is an analytic process (root cause or comparative analysis).
Serial thinking creates consistency and predictability in each system. And then the serial thinker wakes up one morning to discover the predictable output of their genius system is impacted by the output of another system. To understand what is happening requires a parallel state of thinking. -Tom