I was once at a guest lecture by Bjarne Stroustrup (creator of C++ for those who don’t know), and during Q&A, someone in the audience asked him how he felt about the fact that his work was used to kill people.

(The rationale behind the question was based on fighter jets, to some extent, using software written in C++.)

The question was not tongue in cheek. Everyone in the auditorium laughed, though.