They are specialists in the science of controlling clouds of small robots. Both sides in the planetary conflict desire to add nano techs to their group. People from all over the galaxy, interested in nano technology, travel to the Rubi-Ka. The Notum and Jobe makes this an Eldorado for the profession. This is the profession for people who believe in the power of money.
Traders tend to stay away from combat.
Even in an advanced futuristic world like Rubi-Ka, people believe there is more to the world than what we can know. The Meta Physicist is a person who has dedicated himself to understanding spiritual matters. In opposition to the nano technician, the Meta-physicist believes that not everything about the nano formulas can be explained with science.