Surprised. It turns out it’s not disfunction, but dysfunction. And, it appears, to borne out means “proven,” because Borne is the past participle of bear, just like born, except born is used only in the sense of giving birth. I also encountered the word efficacy, which seems very similar to efficiency (doing things right, effectiveness), but in reality, it is closer to effectiveness (doing the right things, result-oriented or usefulness). In the context of medications, Efficacy shows whether a drug works under “ideal” conditions, Effectiveness shows the drug’s performance in conditions closer to real life, and Efficiency shows whether it is sensible to use the drug considering its cost, the number of potential consumers, expected treatment outcomes, and so forth.
https://forum.wordreference.com/threads/dysfunction-vs-disfunction.1450998/
Hi, I'm Rauf Aliev. 