Original sentence: A prodigy, he attended Princeton University at the age of 13 after graduating from high school at the same time as his brother who is five years his senior ("Soft Target"), and took Professor Lawrence Fleinhardt's quantum physics course in his first year.Following his five-year researches on random matrices, Charlie worked on sequences with orthogonal symmetry
Edited sentence: A prodigy, he attended Princeton University at the age of 13 after graduating from high school at the same time as his brother who is five years older than he is,("Soft Target") and took Professor Lawrence Fleinhardt's quantum physics course in his first year.Although this academic had difficulty in such areas of physical training, his aim with a pistol is excellent, which he explains by following Wyatt Earp's advice to focus on accuracy rather than rate of fire.At his brother's insistence, Charlie has taken some FBI field agent training in order to be able to cope with potentially dangerous situations working with the Bureau.Following his five-year studies on random matrices, Charlie worked on sequences with orthogonal symmetry