At least... probably 🙃
productive(X) :- not(takes_breaks(X)).
takes_breaks(X) :- not(debugging(X)).
debugging(X) :- uses_prolog(X).
programmer(aurora).
programmer(eventide).
uses_prolog(aurora).
uses_javascript(eventide).Prolog is a logical language. Therefore, its output is truth:
?- productive(aurora).
true.
?- productive(eventide).
false.
Hence, the conclusion: Prolog prolongs productivity, Q.E.D.