Page 197 - Design for Six Sigma for Service (Six SIGMA Operational Methods)

168 Chapter Seven

other ideas to form basic groups or categories such as materials,
methods, and organization. The discussion may also result in new
ideas that can be added to the list.
Step 3: After the initial screening process has been completed, it will
be necessary to resort to systems designed to aid in identifying the
best choice and an alternative, or to rank and weigh alternatives. It is
always important to have a second choice to fall back on, just in case
the first choice cannot be implemented for reasons that may not
become apparent until detailed development is under way. When the
initial list of ideas has been reduced to a choice of only a few alter-
natives, the simple system illustrated in Table 7.14 may be used. This
sheet identifies the advantages and disadvantages of each alternative
concept. In most cases, an idea with more advantages than disad-
vantages listed will be the first choice. However, there may be an
overpowering disadvantage that creates a serious roadblock. Can it
be eliminated? If it can, the choice may be clear. If it cannot, the
second alternative may be the best choice.

Table 7.14 Idea Screening Work Sheet 2

Idea 1 Idea 2
Advantage Disadvantage Advantage Disadvantage

Idea 3 Idea 4
Advantage Disadvantage Advantage Disadvantage