Why do billions of planets such as the Earth and the Sun, can run peacefully in the universe without collision for billions of years? Why do people often bump into each other? Humanities experts tell us that billions of planets such as the Earth and the Sun are running on their own trajectories, all walking on their own paths, but we humans are not so. If you see someone else's way approaching, you must copy someone else's approach. If you leave your own way and squeeze others' way, how can there be no bumps and collisions? Which of the following, if true, would most question the remarks of the aforementioned humanities experts? ["Everyone's path should be unique and should not overlap.", "Everyone's path is unique, but there are always overlapping parts.", 'Life is unsatisfactory, bumps and collisions are not uncommon.', 'People are not the same as the planet, not to mention that the planet also has bumps and collisions.']