Famous Quotes / Unknown
Unknown: "Johnson's First Law: When any mechanical contrivance fails, it will do so at the most inconvenient possible time."
| Contrivance | Fails | Inconvenient | Johnsons |
| Mechanical | Most | Possible | Time |
| Contrivance | Fails | Inconvenient | Johnsons |
| Mechanical | Most | Possible | Time |