Woah there Betsy, I wasn't accusing anyone of anything, I literally didn't understand the comment as well as you apparently did.
So the second part of my comment stands. In the case of such a civil engineer, I'd focus on "Designed factory and rolled out process allowing organisation to achieve strategic objective to increase rate of baking ceramic products by 25%".
He just said:
>> that ended up being used to commit a (arguably) crime against humanity.
What about that makes you think that he knew what it would be used for?
"I'm the civil engineer who designed a large and complicated factory for the mass baking of ceramic products."
...
"I did not know the next government would start a world war and use them to gas Jews."
You seem to assume that everyone has perfect foresight. I assure you, even you don't have perfect foresight.