Project Decision Making
The finesse with which a project team or company
makes decisions is an indicator of the potential success of the project
and company.
The easiest way to make decisions is with a guru.
This is the person who understands the customers, applications,
technologies, team and the project/business constraints. The guru makes
the decisions in a way that they stick either through consensus
building, power, or influence. Does this sound like the definition of an
entrepreneur? In many cases it is the formula that makes for a
successful one.
Sometimes the decision is too complex, or a guru is
not available, or the team doesnt buy into the decision. Those are
times when you may want to use more formal decision tools.
While the two decision processes I will describe
are helpful, they are most importantly a forum for the team to talk
about the criteria that make up the decision, the importance of the
criteria, and how the criteria are satisfied by the teams choice of
outcomes.
For Most Decisions - Decision Matrix
The most straightforward method is a decision
matrix that I attribute (perhaps incorrectly) to Kepner-Tregoe (www.kepner-tregoe.com).
My interpretation is a simple matrix where the criteria are listed in
rows, the alternatives in columns with the first column containing the
relative importance of the criteria. I usually use a scale of one (poor)
to five (strong) to score how well each decision criteria is served by
each decision alternative. Then with some simple arithmetic a score for
each decision alternative is calculated where the high point score wins.
The problem with this method is that it is too easy
to fudge it by consciously or subconsciously manipulating the scores
to achieve a desired outcome. A review of results from this method must
include a reasonableness check. The advantage of this method is that it
is straightforward and intuitive.
For Complex Decisions - Analytical Hierarchy
Process
For complex decisions, my preferred method is the
Analytical Hierarchy Process. I have used this for over 20 years and in
my opinion, when this process is used, the quality of the decision is
assured.
This process is well suited to complex decisions
and has a unique feature in that it measures the quality of the input
used to make the decision. It does this by calculating a consistency
factor for the completed work. If the work does not measure up, the
consistency factor will show that the team should rework the analysis.
In my experience, when the teams understands and agrees on the problem,
understands the decision criteria, and there are no hidden agendas,
consistency is rarely a problem. On the other hand, if there are hidden
agendas or incomplete understanding of the problem, it can take a long
time to get all of the facts straight.
There is a learning curve for this process. You
should expect to spend 40 to 80 hours to learn it well enough to tackle
a first project, and plan on using it several times before you tackle
something complex while facilitating a group of people working on a
decision.
I recommend the book Decision Making for Leaders
by Thomas L. Saaty (ISBN 0-9620317-8-X) for an introduction and a large
number of examples of the process. There is a new revision available
through the Harvard Book Store (use special request form at
www.harvard.com). If you get the
book, be sure to notice the approximation method of calculation on page
76. Although the approximation method should be used with caution, I
have had good success using it. Expert Choice Inc. (www.expertchoice.com)
sells software to facilitate the process and calculations.