Are you deliberately ignoring where I stated that the verification was an add-on process after discovering that both processes were in use, that there were two sufficient causes to the one effect? Are you deliberately failing to address where the two processes were leading to the same action? Why are you concentrating on the verification aspect which I acknowledged turned the two sufficient conditions into necessary conditions (the very purpose of the verification process) rather than the existence of there initially having been two sufficient conditions to the one effect? Why are you inserting "own" result into the definitions you gave? There is no mention of "own", simply of the effect being caused by the sufficient condition. Even with the definition you gave, a different sufficient condition might be that they get A's in 80% but also attend and pass a work-placement. Both sufficient conditions (this and the one given in your definition) would result in the same effect. So yes, it does accomplish that. Or do you intend to alter the definition and add in other words to suit your purpose? They could, yes. Any OR gate in an electronic system would attest to that. The same result would be obtained if both conditions are satisfied at the same time, or if just one of them is satisfied.