# Operational Complexity: Risk Model Insufficiency

Most readers will be familiar with the above linear Risk Matrix Model. This graphical representation of risk exposure is useful but strict adherence to it can lead to a false sense of security.

# Systemic Risk Management

The real world is very complex with many moving parts. The potential interaction of processes, events and other challenges can lead to disaster. It is often the case that the combination of a number of seemingly unrelated and in and of themselves potentially minor events can lead to catastrophe.

A systemic approach to risk exposure is appropriate. Field operations usually involves several to many somewhat disparate processes and individuals.

Typically, the operator will have individuals in the field as well as the office working together. Contractors and sub-contractors are similarly constructed. The number of interactions can grow exponentially in a large project or program.

Therefore, it is important to ‘see’ risk as a dynamic interacting model. For example, the following quotation is a straightforward presentation of the actual risk field operators face.

“Planning for the abandonment of Macondo was extremely
complex. The fundamental source of that
complexity was a phenomenon well known to systems engineers: the number of
potential pairwise interactions among a set of *N* elements grows as *N*
times *N*-1, divided by 2. That means that if there are two elements in
the set, there is one potential interaction; if there are five elements, there are
ten protentional interactions; ten elements and there are forty-five; and so
forth. If the interactions are more
complex, such as when more that two things combine, the number is larger. Every potential interaction does not usually
become an actual one, but adding the elements to a set means that complexity
grows much more rapidly than ordinary intuition would expect.”[i]

The authors’ note that NOT all combinations can happen, but the possibility of several is likely. Many decision makers do not expect exposures as great as they likely are in a complex environment.

# Interactive Model

So how great is your risk? The following calculator will give you a perspective on your organization’s exposure. It is straightforward and easy to use.

You are only required to input two variables:

*n*
= the number of elements

*m*
= elements from n in certain order, it is **arrangement**

Taken from the Macondo model above, if n=10 and m=2, the
number of **combinations** of m from n equals
45.

Addition data the calculator provides:

Each ordered set of *n* is a permutation

Generally, the number of combinations
of *m* from *n* with repetitions is not useful for our purposes other than the recognition
that repetition is possible.

This calculator does not indicate where risk lies. As the authors of Deepwater Horizon: A Systems Analysis of the Macondo Disaster suggest, it helps decision makers better understand the nature of their complex environment.

# Final Thoughts

Simple risk models may have their place. They are useful for presentation purposes. However, they are insufficient when assessing the exposure of today’s complex operational situations.

High Reliability Management requires that decision makers NOT simplify the complex. Understanding the level of exposure using systemic risk management techniques can help clarify organizational threats.

**Are Your Organization’s Risk Management Techniques Robust Enough?**

For more information on Risk Mitigation check out our Operational Excellence Platform.

[i] Boebert, Earl and Blossom, James M. (2016). Deepwater Horizon: A Systems Analysis of the Macondo Disaster. Cambridge, MA: Harvard University Press. pp. 65-66.

## Appendix–The Math

For those interested, this is the math for the calculator. It is taken directly from the Planetcalc website.

So, assume we have a set of n elements.

Each ordered set of n is called **permutation**.

For example, we have set of three elements – А, В, and С.

Example of ordered set (one permutation) is СВА.

Number of permutations from n is

Example: For set of А, В, С number of permutations is 3! = 6. Permutations: АВС, АСВ, ВАС, ВСА, САВ, СВА

If we choose m elements from n in certain order, it is **arrangement**.

For example, arrangement of 2 from 3 is АВ, and ВА is the other arrangement. Number of arrangements of m from n is

Example: For set of А, В, С number of arrangements of 2 from 3 is 3!/1! = 6.

Arrangements: АВ, ВА, АС, СА, ВС, СВ

If we choose m elements from n without any order, it is **combination**.

For example combination of 2 from 3 is АВ. Number of combinations of m from n is

Example: For set of А, В, С number of combinations of 2 from 3 is 3!/(2!*1!) = 3.

Combinations: АВ, АС, СВ

Here is the dependency between permutations, combinations and arrangements

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### About the Author

Dr. Scott M. Shemwell has over 30 years technical and executive management experience primarily in the energy sector. He is the author of six books and has written extensively about the field of operations. Shemwell is the Managing Director of The Rapid Response Institute, a firm that focuses on providing its customers with solutions enabling Operational Excellence and regulatory compliance management. He has studied cultural interactions for more than 30 years—his dissertation; Cross Cultural Negotiations Between Japanese and American Businessmen: A Systems Analysis (Exploratory Study) is an early peer reviewed manuscript addressing the systemic structure of societal relationships.