Nick Brown was a 50y/o CS/IT employee who wanted to cross-train to human resources and wanted "evidence-based stuff". He encountered lots of fantastic positive psychology claims that were being accepted wholesale as "quantitative". He traced the math behind a critical one back to a computational fluid dynamics paper, which the debunkees had used equations from with no context. (allegedly because of the use of "Flow" in positive psychology!)
He cold emailed professors asking for feedback, wrote a 3000 word critique, got help from a mathematician and psychologist in smoothing the writeup, and ultimately got it published in a top journal and the offending results recognized as flawed. The general crusade continues along with co-crusaders Sokal and Friedman.
The result in question was the legendary 3-1 positive to negative tipping point between flourishing individuals and languishing ones.