| Clue | Source | Date |
|---|---|---|
| Optimal | Newsday | 08 Oct 2023 |
| Ideal scenario | New York Times | 24 May 2023 |
| Optimal | The Washington Post | 14 Mar 2021 |
| Optimal | LA Times Daily | 14 Mar 2021 |
| Optimum | Thomas Joseph | 30 Jul 2020 |
| Ideal, as a scenario | Thomas Joseph | 14 Mar 2019 |
| Optimum | New York Times | 25 Nov 2018 |
| Optimum | ||
| Ideal, as a scenario | USA Today | 08 Apr 2017 |
| Optimum, as a scenario | Wall Street Journal | 05 Oct 2015 |
| Optimum, as a scenario | ||
| Optimal | ||
| Optimal | ||
| Ideal, as a scenario | ||
| Ideal | ||
| If everything goes well | ||
| Ideal, as a scenario |