The limitations of complexity theorizing in project studies are traced back to simplistic and reductionist theorizing strategies. This article offers pragmatist recommendations to develop strong theorizing strategies organized in a triad: orders of theorizing (degree of recursiveness of the theorizing process), levels of theorizing (interactions between micro, meso, and macro loci of analysis), and the integration between orders and levels brought together in a recursive relationship of co-construction. We offer four main contributions to complexity theorizing in project studies: pragmatism is useful, deeper attention should be paid to theorizing across levels, third-order theorizing is needed, and complexifying terminology is required.

项目研究中复杂性理论化的局限性可以追溯到简单化和简化主义的理论化策略。本文为实用的建议提供了建议，以发展组织成三元组的强大理论策略：理论顺序（理论过程的递归度），理论水平（微观，中间和宏观分析之间的相互作用）以及顺序之间的整合和等级以递归的共建关系汇聚在一起。我们为项目研究中的复杂性理论提供了四个主要贡献：实用主义是有用的，应该更深入地关注跨层次的理论，需要三阶理论，并且需要复杂化术语。