| Term | History |
| 1 | Became a Free Trader at age 18 |
| 1 | Nearly killed. Fully recovered. Owe 11,250 for medical bills. |
| 2 | Became a Scientist at age 22 |
| 2 | Moved to a new world. |
| 3 | Continued as Scientist at age 26 |
| 3 | Work for an eccentric but brilliant mentor, who becomes an Ally. |
| 3 | Promoted to rank 1 |
| 4 | Continued as Scientist at age 30 |
| 4 | Win a prestigious prize for your work. |
| 5 | Continued as Scientist at age 34 |
| 5 | An expedition or voyage goes wrong, leaving you stranded in the wilderness. |
| 6 | Became a Flight at age 38 |
| 6 | Is now a Crewman |
| 6 | Nearly killed. |
| 7 | Became a Barbarian at age 42 |
| 7 | Betrayed by a friend. One of your Contacts or Allies betrays you, ending your career. That Contact or Ally becomes a Rival or Enemy. |
| 8 | Switched to Engineer/Gunner at age 46 |
| 8 | Commanding officer takes an interest in your career. |
| 8 | Promoted to Engineer/Gunner rank 1 |
| 8 | Is now a Able Spacehand |
| 9 | Voluntarily left Engineer/Gunner |
| 9 | Returned to Scientist at age 50 |
| 9 | Work for an eccentric but brilliant mentor, who becomes an Ally. |
| 9 | Promoted to rank 2 |
| 10 | Aging Crisis. Owe 20,000 for medical bills. |
| 10 | Voluntarily left Scientist |
| 10 | Retired at age 54 |
| 10 | Birth or Death involving a family member or close friend. |
| 11 | Aging Crisis. Owe 30,000 for medical bills. |
| 11 | Betrayal. Convert an Ally into a Rival or Enemy. |
| 12 | Aging Crisis. Owe 30,000 for medical bills. |