A portion of Primary Inversion is devoted to Soz's attempts to deal with the emotional repercussions of being both a highly sensitive empath and an advanced military weapon. In that guise, the story deals with themes of post traumatic stress syndrome. James Schellenberg at Challenging Destiny Reviews has noted that Asaro "understands one of Roger Ebert's dictums about what makes for interesting drama, namely that it's not what we do, but how we feel when we're doing it", and that Soz is "a strong, dynamic character, one that people of either gender can easily identify with.
A portion of Primary Inversion focuses on Soz's attempts to deal with the emotional repercussions of being a highly sensitive empath and an advanced military weapon. The story explores PTSD themes. James Schellenberg at Challenging Destiny Reviews noted that Asaro "grasps one of Roger Ebert’s principles for compelling drama, which is not about what we do but how we feel during it", and that Soz is "a strong, dynamic character that people of any gender can easily relate to."