Ahead of @incose_org IW 2026 in LA, I wanted to share some recent work exploring how we might study systems engineering questions more empirically.
Many long-standing ideas in Systems Engineering including perspectives related to complexity are well motivated and widely discussed, but are not often examined through repeatable experiments involving real human decision-making.
In this study, we developed a repeatable, human-in-the-loop experimental setup to explore the relationships between structural complexity, effort, and performance in system design tasks.
What we observed will feel familiar to many practitioners:
performance improves with additional effort, but only modestly, while increases in structural complexity show diminishing returns.
For me, the most interesting aspect is the method itself.
This kind of experimental approach offers one possible way to gradually build a shared empirical base for systems engineering ideas, alongside theory and practice.
Alfonso Lanza, Joshua Sutherland, Marc-Andre Chavy-Macdonald, Olivier de Weck "Quantifying Structural Complexity, Effort, and Performance: An Early Experiment Using Network Design Tasks", Systems Engineering, First published online: 29 December 2025
The paper is available open access here: doi.org/10.1002/sys.70…
#SystemsEngineering is evolving-and so are we! #INCOSE is proud to debut our new logo and website. We’ve modernized our brand to match the innovative spirit of our members while retaining the global identity that has always been at our core. bit.ly/416wzAm
LFG cleaned graffiti off the tube.
TfL smeared us as criminals.
They claimed they had evidence. But we discovered the secret emails that prove they never had evidence.
Lying is bad. Say sorry, Andy.