| Term | History |
| 1 | Became a Scientist at age 18 |
| 1 | Caught cheating in some fashion, advancing your career and research by stealing another’s work, using an alien device, taking a shortcut and so forth. |
| 1 | Your work is sabotaged by unknown parties. You start again from scratch. |
| 1 | Gain an Enemy |
| 1 | Promoted to rank 1 |
| 2 | Continued as Scientist at age 22 |
| 2 | Win a prestigious prize for your work. |
| 3 | Continued as Scientist at age 26 |
| 3 | An expedition or voyage goes wrong, leaving you stranded in the wilderness. |
| 4 | Voluntarily left Scientist |
| 4 | Became a Flight at age 30 |
| 4 | Is now a Crewman |
| 4 | You are blamed for an accident that causes the death of several crew members. Your guilt drives you to excel. |
| 5 | Switched to Engineer/Gunner at age 34 |
| 5 | Commanding officer takes an interest in your career. |
| 6 | Continued as Engineer/Gunner at age 38 |
| 6 | Vessel participates in a diplomatic mission. |
| 6 | Promoted to Engineer/Gunner rank 1 |
| 6 | Is now a Able Spacehand |
| 7 | Continued as Engineer/Gunner at age 42 |
| 7 | Special assignment or duty on board ship. |
| 7 | Promoted to Engineer/Gunner rank 2 |
| 7 | Is now a Petty Officer, 3rd class |
| 8 | Continued as Engineer/Gunner at age 46 |
| 8 | You are falsed accused for an accident that causes the death of several crew members. Gain the officer who blamed you as an Enemy. |
| 9 | Switched to Line/Crew at age 50 |
| 9 | Advanced training in a specialist field |
| 9 | Promoted to Line/Crew rank 3 |
| 9 | Is now a Petty Officer, 2nd class |
| 10 | Continued as Line/Crew at age 54 |
| 10 | Placed in the frozen watch (cryogenically stored on board ship) and revived improperly. |
| 11 | Aging Crisis. Owe 30,000 for medical bills. |
| 11 | Retired at age 58 |
| 11 | Moved to a new world. |
| 12 | Aging Crisis. Owe 60,000 for medical bills. |