Future Reality Tree (FRT)

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The FRT is a tool for revealing how changing the current status can affect the future

‘reality’. It is most commonly used to identify solutions (injections in TOC terminology) to problems identified during the construction of a CRT. It also allows evaluation of the injections before resources are committed to them. In this section, we show how to construct an FRT based on the example from the previous section.

The first step is to identify the desirable effects. This is typically done by stating the opposite of the UDEs from the CRT (Figure 8.8).

The second step is to list the possible injections for the root causes (Figure 8.9).

W1a. User feels frustrated

W1b. User wastes time waiting

N1. Operators cannot cope with the number

of calls

N3. Most of the time still need to

speak to the operator N2. User

wastes time going through all

the options

Figure 8.4 Rearrangement of CRT to remove redundancy.

98 Current and Future Reality Trees

N3. Most of the time still need to

speak to the operator

C2. Options are not arranged in

order of popularity

C1. Pre-set options not comprehensive

enough C1a. Operators

are inexperienced

C1b. Not enough Operators Nothing to do

during waiting time

User is busy

Training program is not comprehensive

Too many new operators

High turnover W1a. User

feels frustrated

W1b. User wastes time

waiting

N1. Operators cannot cope

with the number of calls

N2. User wastes time going through all the options

Figure 8.5 Expanding a branch.

The third step is to insert the injections into the CRT and change the effects where ap- propriate. Add new injections if needed until they are sufficient to reach the desirable effects (Figure 8.10).

The fourth and final step is to look for possible negative effects due to the intro- duction of the injections. If there are any, brainstorm new injections that can take care of them. This is to assess the feasibility of the solutions and also, to a certain extent, to error-proof them. If there is no good solution to the new negative effects, and the particular injection is not the only way to achieve the desirable effect, then it may be a good idea to drop the injection. As shown in Figure 8.11, adding new operators will increase operating costs; if there is no direct solution to this, it might be desirable to drop the injection, especially if the operators are felt to be well trained and efficient.

The FRT is now complete. The next step is to implement the solutions. This step can vary from an easy fix such as hiring two more operators, to forming a project team to revamp the entire training program.

Future Reality Tree (FRT) 99

C1a.

Operators are inexperienced

C1b. Not enough operators

Training program is not comprehensive

Too many

new operators High turnover N1. Operators

cannot cope with the number of

calls

Figure 8.6 Addition of a negative reinforcing loop.

100 User feels frustrated

110 User wastes time waiting

121 Operators cannot

cope with the number of calls

123 User needs to

speak to the operator

RC4 Options not in order of popularity

RC5 Pre-set options not comprehensive

enough 131

Operators are inexperienced

122 User wastes time going through all the

options

RC3 Not enough

operators RC1

Nothing to do during waiting time

RC2 User is busy

RC6 Training program is not comprehensive

141 Too many new

operators

RC7 High turnover

Root Cause

Root Cause

Root Cause Root Cause

Root Cause

Root Cause Root Cause

Figure 8.7 Addition of root causes.

100 Current and Future Reality Trees

User feels frustrated

User wastes time waiting

User feels satisfied

User does not waste time waiting

to be served Undesirable Effects Desirable Effects

Figure 8.8 Desirable effects.

Options are notRC4 arranged in order of

popularity

RC5 Pre-set options not comprehensive enough

RC3 Not enough

operators RC1 Nothing to do during

waiting time RC2 User is busy

RC6 Training program is not comprehensive

RC7 High turnover

Root Causes Injections

Study the pattern of users' needs and include

them in the selection Rearrange the order of

the options regularly according to usage To have something user interesting to do

while waiting Call-back system that do not require user to

wait on the line

Set up a comprehensive and effective training

program

Improve the hiring process to ensure staff

stay longer Right-size the number of operators

Figure 8.9 Root causes and their injections.

Comparison with Current Six Sigma Tools 101

In User feels

satisfied

User does not waste time waiting

to be served

N1. Operators can cope with the number of

calls

User does not need to speak to the operator often

Injection: Rearrange the order of the option regularly according to

the usage

Injection: Study the pattern of users' needs and include them

in the selection C1a. Operators

are experienced and fast

User does not have to waste time going

through all the options

Injection: Right- size the number of operators Injection: Have something to entertain

the user while waiting

Injection: Set up a comprehensive and

effective training program

Not many new

operators Low turnover

Injection: Improve the hiring process to ensure new staff will stay longer Injection: Call- back system that does not require user

to wait on the line

Figure 8.10 CRT with injections added.

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