Not-Invented-Here Syndrome

The organizational tendency to reject external ideas, solutions, or technologies in favor of internally developed alternatives—even when external options are superior. Engineering teams rebuild rather than license. Product teams develop proprietary tools instead of adopting proven ones. Strategy teams dismiss consultant recommendations regardless of quality. NIH syndrome is driven by a mix of: the IKEA effect (we value what we build), professional pride ('we're smart enough to build this ourselves'), legitimate concerns about external dependencies, and fear that adopting external solutions signals internal inadequacy.

When to use it

When teams are building solutions that already exist externally; when 'we can do it better ourselves' is asserted without evidence; when engineering resources are consumed by non-differentiating infrastructure; when the organization's velocity is limited by insistence on building everything in-house.

How it can help

Create a 'build vs. buy' framework that forces honest evaluation. For every capability needed: (1) Does a proven external solution exist? (2) Is building internally a core competency that creates competitive advantage? (3) What's the true total cost of building (including opportunity cost of engineering time) versus buying? If building isn't a competitive differentiator, buy it. Save engineering time for what's truly unique. The cultural intervention: celebrate smart adoption of external solutions as strategic intelligence, not as a sign of weakness. Reframe 'not invented here' as 'proudly found elsewhere.'