> it’s the same word!

I guess if you take the square root of -1 you do get a complicated number, but it's a complex one. And then there's the complication for modern democracy called the military-industrial complex, and Oedipus's complex certainly complicated things. Then there's Ghost in the Shell: Standalone Complex, but I'm not really sure what that means.

Seriously, here's the best summary I can quickly find: [0]

"Complicated problems can be hard to solve, but they are addressable with rules and recipes, like the algorithms that place ads on your Twitter feed. They also can be resolved with systems and processes, like the hierarchical structure that most companies use to command and control employees.

... Complex problems involve too many unknowns and too many interrelated factors to reduce to rules and processes. A technological disruption like blockchain is a complex problem. A competitor with an innovative business model — an Uber or an Airbnb — is a complex problem. There’s no algorithm that will tell you how to respond.

This could be dismissed as an exercise in semantics, except for one thing: When facing a problem, says Nason, managers tend to automatically default to complicated thinking. Instead, they should be “consciously managing complexity.”"

Those are very different problems for software development too, and many in IT definitely try to treat every problem as complicated.

[0] https://sloanreview.mit.edu/article/the-critical-difference-...