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We approach the case with an absolutely blank mind, which is always an advantage. That way you form no theories. You are simply there to observe and to draw inferences from your observations.”
The business analyst needs to be objective. The business analyst cannot have preconceived notions, including those foisted on them by the customer, sponsor, or subject matter expert. When eliciting information the business analyst listens naively and asks questions without prejudice. “A seasoned analyst knows to listen naively and ask the naked question. When the business analyst comes to an interview with a solution in mind, for example, one proposed to them by the sponsor or another stakeholder with political clout, the business analyst will tend to ask questions and hear the answers that support the solution and ignore or discount any information that may cast doubt on the solution. This is called confirmation bias.
“It is a capital mistake to theorize before one has data. One begins to twist facts to suit theories, instead of theories to suit facts.”
“Don’t jump to solutions.” A business analyst should look for more than one solution to a business problem. Once a solution has been established, ask “is there any other way to solve this problem?” In that way we keep ourselves from accepting the first, and not perhaps the best, solution that comes to mind.