It is 1915.
In seeking supporting evidence for his groundbreaking theory of general relativity, Einstein applies his equations to Mercury’s orbit, which has long puzzled astronomers as it does not conform to classical Newtonian mathematics. Einstein succeeds in resolving this discrepancy and describes the moment as so thrilling that he experiences several hours of heart palpitations.
His heart hammers rhythmically, rapidly, echoing the dancing heartbeat of a bush hunter stalking antelope on the golden African plains. He realises, at this very moment, he alone wields complete understanding of the movements of heavenly bodies suspended in a limitless universe.
Perhaps this is what Einstein feels: the ancient thrill of mastery, however minuscule and momentary, over all things imaginable.