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If the interviewees feel safe, they will tell you their experience and it typically is spot on. If they don’t feel safe, then they may bend the truth a bit. The data doesn’t have to be perfect. The goal here is for the data to be directionally right. It doesn’t matter if the estimates are…
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Tracy O'Rourke

Tracy is a Master Black Belt at, the co-author of The Problem-Solver’s Toolkit and co-host of the Just-in-Time Cafe. She is also a Lean Six Sigma Green Belt Instructor at UC San Diego and teaches in San Diego State University’s Lean Enterprise Program. For almost 20 years, she has helped leading organizations like Washington State, Charles Schwab and GE build problem-solving muscles.