Organic chemistry was the course that ended medical careers before they started. This was its reputation, and the reputation was not inaccurate. The course required a specific combination of spatial reasoning, memorization, and the particular cognitive flexibility that allowed you to think about molecular structures in three dimensions while simultaneously tracking reaction mechanisms that unfolded in time. It was, in the medical school pipeline, the deliberate filter.
He found it absorbing.
Not because it was easy — it was not easy, even with an INT of 29 and a WIS of 40 and the accumulated knowledge of two lifetimes. The spatial reasoning was demanding and the reaction mechanisms required a kind of molecular intuition that was adjacent to his magical perception but not identical to it. He worked for it. He sat in the chemistry library on Tuesday and Thursday evenings and worked through problem sets with the specific focused pleasure of someone who is genuinely in contact with difficult material.
He also found that the Diagnostic Sight was more useful in organic chemistry than he had anticipated. The ability to perceive molecular and cellular structure — which had developed originally as a medical diagnostic tool — translated unexpectedly into an intuitive grasp of molecular geometry. He could feel, in a way that was not entirely different from feeling a patient's injury, the three-dimensional arrangement of functional groups and the ways they strained toward or away from each other. This gave him a shortcut that was not strictly available to students without divine blood, which he noted with some amusement and was careful not to make conspicuous.
His lab partner was a woman named Saanvi Chandra, second-year, who had the specific quality of someone who had been excellent at everything for so long that the expectation of excellence had become its own kind of pressure. She worked with rigid precision and was genuinely very good and was also visibly exhausted by the effort of maintaining a standard she had set for herself.
He was a good lab partner because he had learned, over years of working with people under pressure, that the most useful thing was usually not additional technique. The most useful thing was usually: being reliable, not making extra work for the other person, and occasionally saying something that acknowledged the real situation.
On the third week, after a particularly demanding mechanism problem, he said: 'You know you don't have to be perfect at this. You just have to understand it.'
She looked at him with the expression of someone who has just been told something they know is true and have not been telling themselves. 'Easy for you to say,' she said, but without hostility. 'You seem to just see it.'
'I have an unusual form of spatial perception,' he said, which was honest. 'It's not superiority. It's a specific tool. You have rigor and consistency that I don't have to the same degree. That's also a specific tool. We complement each other.'
She considered this. Then: 'Are you always this measured?'
'I had an unusual childhood,' he said.
She almost smiled. They ran the experiment. Their results were, as he had predicted, complementary: his intuitive setup and her rigorous execution produced a cleaner outcome than either of their previous individual efforts. He filed this under: the principle holds outside the camp. The right combination of different skills is always stronger than one skill in isolation.