> If repeated success S correlates with repeated use of methodology M, that's a damn strong sign of causation, and if it isn't, I'd still use it. the problem i

> If repeated success S correlates with repeated use of methodology M, that's a damn strong sign of causation, and if it isn't, I'd still use it. the problem is that several different methodologies "worked multiple times" in practice, over the time, often in the same company, and every time the managers of the era sold it as "a great innovation" and abandoned it for the new trendy fad few years later or because the new manager had different ideas and brought a different "culture" (scrum masters that charged thousands euro/day COUGH COUGH). See many Google engineers that considered agile nonsense (for Google), no more than 3-4 years ago. So basically it doesn't matter which one you chose.