Matriarch Erexi Aduc and Kievenar Aduc were both part of the command layer of the Aduc Family.
The current and future leader of the Aduc Family had not only studied terraforming, but also politics, business, administration and management.
They needed to develop competencies in many different fields in order to make sure the Aduc Family could continue to survive and make a living in a constantly changing galactic human community.
Tierna Aduc and Pesca Aduc did not possess the same broadened perspective. They had both devoted their lives to terraforming and exobiology with all of their hearts, so they were not exposed to the power plays that took place between different parties.
For this reason, they still had a lot of difficulty understanding why the Larkinsons, who the Aducs had approached with plenty of goodwill, could act so vilely all of a sudden!
"These scoundrels!"