| Term | History |
|---|
| 1 | Became a Engineer/Gunner at age 18 |
| 1 | Is now a Crewman |
| 1 | Vessel participates in a notable military engagement. |
| 1 | Attempt at commissioned failed. |
| 1 | Promoted to Engineer/Gunner rank 1 |
| 1 | Is now a Able Spacehand |
| 2 | Continued as Engineer/Gunner at age 22 |
| 2 | Advanced training in a specialist field |
| 3 | Continued as Engineer/Gunner at age 26 |
| 3 | Betrayal. Convert an Ally into a Rival or Enemy. |
| 3 | Promoted to Engineer/Gunner rank 2 |
| 3 | Is now a Petty Officer, 3rd class |
| 4 | Continued as Engineer/Gunner at age 30 |
| 4 | Advanced training in a specialist field |
| 4 | Promoted to Engineer/Gunner rank 3 |
| 4 | Is now a Petty Officer, 2nd class |
| 5 | Voluntarily left Engineer/Gunner |
| 5 | Became a Scientist at age 34 |
| 5 | Cheated in some fashion, advancing your career and research by stealing another’s work, using an alien device, taking a shortcut and so forth. |
| 5 | Gain an Enemy |
| 6 | Continued as Scientist at age 38 |
| 6 | A new romantic starts. Gain an Ally. |
| 6 | Promoted to rank 1 |
| 7 | Continued as Scientist at age 42 |
| 7 | Advanced training in a specialist field. |
| 7 | Promoted to rank 2 |
| 8 | Continued as Scientist at age 46 |
| 8 | Make a breakthrough in your field. |
| 8 | Promoted to rank 3 |
| 9 | Continued as Scientist at age 50 |
| 9 | A disaster or war strikes. |
| 9 | Severely injured. Fully recovered. Owe 2,500 for medical bills. |
| 9 | The planetary government interferes with your research for political or religious reasons. You continue working secretely. |
| 10 | Aging Crisis. Owe 30,000 for medical bills. |