| Clue | Source | Date |
|---|---|---|
| Rarity at tearjerkers | Newsday | 14 Jan 2024 |
| They don't show any sign of tears | ||
| Unmoved reaction | New York Times | 07 Oct 2021 |
| Sign of the unmoved | Thomas Joseph | 26 Sep 2020 |
| They may be hard to find at a tearjerker | ||
| They're rare at a tearjerker | ||
| Evidence of lack of empathy |