- "I do hope we have a moment to discuss field density and its relationship to gravity phenomena."
- "Indeed. I would appreciate such a talk. It is an interest of mine."
In 2269, field density was an interest of Starfleet Commander Spock. It had also been studied by the android Rayna Kapec (along with such other studies like sub-dimensional physics) who had learned the concepts from the immortal Human Flint. (TOS: "Requiem for Methuselah")