https://kathrynwelds.com/2026/05/13/four-career-trajectories-linear-expert-spiral-transitory/Kathryn Welds, PhD | Curated Research + Commentaryen2026-05-13T12:00:00+00:00Four Career Trajectories: Linear, Expert, Spiral, TransitoryCareer Development, Career Assessment, Kenneth Brousseau, Michael Driver, Timothy Butler, James Waldroop, career fit, career paths, Career Leader