Literary notes about Trajectory (AI summary)
In literature, "trajectory" functions on both literal and metaphorical levels. It is used to denote the precise path of physical objects—from rockets and bullets in technical or warlike descriptions ([1], [2], [3]) to the measured courses of spacecraft and projectiles in scientific discourses ([4], [5]). At the same time, writers creatively extend the notion to the abstract, evoking the idea of progress or a predetermined course in life; one character's upward trajectory in personal development is as telling as a physical arc through the heavens ([6], [7]). This dual usage enriches the narrative by blending scientific precision with an exploration of fate and human endeavor ([8], [9]).