 What do Miss Drayson and Kylen Braynek have in common?
To violate the rigid social setup of Saarkkad would mean the instant closing off of the supply of biochemical products that the Saarkkadic laboratories produced from native plants and animals—products that were vitally necessary to Earth's war, and which could be duplicated nowhere else in the known universe. Miss Drayson stood there calmly, her face a mask; her emotions were a secret. "I'll let you know as soon as I reach a decision, Miss Drayson. If they won the armistice, they'd be able to retrench and rearm, and the war would break out again within a few years. They had no intention of sticking their figurative noses into a battle between the two most powerful races in the galaxy.
 They are both paranoid about what other people think.
 They externalize a lot of their thought processes.  They are constantly processing extreme amounts of details.  They both dislike interacting with other people.  They are both paranoid about what other people think.