what-when-how
In Depth Tutorials and Information
Backing (Attributes):
Fundamental Objective: Performance
- Means objective: build a prototype system to
estimate the efforts taken to add/remove a
module
- Attribute: support v.s. opposition
Fundamental Objective: Usability
Fundamental objective: build a prototype system to
check the best level of data encryption
- Attribute: the maximum number of bits in the
Data (State of Agreement):
Specified Design Requirements
Defined Quality Attributes
Identified Functional Modules
Warrant (Objectives):
Fundamental Objective: Portability
- Means objective: build a prototype system to
estimate the efforts taken to add/remove a
module
Fundamental Objective: Security
- Means objective: build a prototype system to
check the best level of data encryption
applicable encryption algorithm
Qualifier
(Evaluation for Own Objectives):
How well the proposal achieve the
objectives in the warrant
Claim (Task Proposal):
Define maintainability and safety
for the manufacturing product
Rebuttal (Evaluation for the Objectives
of the Team):
How well the proposal achieve the
objectives proposed by the team
Figure8.6
Anexampleargument(bytheengineer).
his perspective regarding the performance—how well his argument may achieve the
objectives proposed by the entire team.
Different argument components can be exchanged in an order, instead of all
at once; this exchange will continue only if the stakeholders have not reached a
consensual agreement. Such an order of exchanging argument components is actu-
ally deined by the logic low between the argument components. he claim should
always be proposed irst to clearly state the stakeholders' position. he data can be
exchanged with the claim as it shows the facts behind the claim. In fact, we sug-
gest that the claim and data should be exchanged together since presumably the
claims are actually conflicting (otherwise negotiations aren't necessary) and thus it
is necessary to present data in this step. After the data it should be the warrant that
justifies the use of data for proving the claim. Backing comes next as further facts to
support the warrant. he last two components that should be exchanged are quali-
fiers indicating the degree of desire for the proposal and the rebuttal indicating the
condition that may suspend the warrant.
In details, the order of exchanging the arguments is defined as follows:
First, the stakeholder begins to work on the design task and develops her claim
based on the data, that is, her task implementation proposal based on the state of
agreement that can validate the proposal is a further effort to achieve the goals.
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