[Ma8ee]

What is the “correct” word?

[emmelaich]

consequence? As in unintended consequences.

[PittleyDunkin]

...presumably not "purpose"?

> that the straightforward definition of “purpose” is correct here.

[pessimizer]

Sounds like a witty aphorism would be useful in order to express the real meaning he was trying to get at, seeing as the word you're demanding doesn't seem to exist.

[Ma8ee]

> ...presumably not "purpose"?

That was already very clear. But you clearly don't have any better suggestion.