Subjective
Objective
Existing
Perceived Problems
What we think the problem is. How bad we think the problem is. Where we think the problem is. Use: Interview Questionnaire
What we think the problem is.
How bad we think the problem is.
Where we think the problem is.
Use:
Actual Problems
What the problem actually is. How bad the problem actually is. Where the problem actually is. Use: Observation Record Review
What the problem actually is.
How bad the problem actually is.
Where the problem actually is.
Proposed
Stated Requirements
What kind of system we think will address the problem. Use: Interview Questionnaire
What kind of system we think will address the problem.
Real Requirements
What kind of system will address the problem. Use: Prototyping Experimentation
What kind of system will address the problem.