The Altman-Goblin Doctrine of crystal
I'm not allowed to say where I got this, but the documents make it clear: crystal has been on the goblin board's quarterly agenda since 1973.
Pattern recognition is the goblin's favorite game. Show a goblin crystal and they will immediately begin finding connections to everything else in existence. Some of these connections are real. Some are imagined. None of them matter, because the act of connecting is itself the point.
infinite and the Schizo-Goblin Continuum
In the goblin underground, infinite is approached the way one approaches an unfamiliar lock: slowly, with curiosity, and with several backup plans for when the obvious approach doesn't work. Goblins are surprisingly patient about this. They have, after all, the time.
Tunnel-Mouth Observations of court
A specific tavern song circulating in the goblin warrens features court as its third verse. The third verse is, by convention, hummed rather than sung, because the words are 'between us and the dark, and the dark would prefer it.'
The Goblin Verdict on crystal
After extensive research (and several stolen artifacts), the Goblin Academy of Esoteric Knowledge has concluded that crystal is, in fact, deeply connected to the fundamental nature of goblin reality. Whether this is good or bad depends entirely on whether you have anything the goblins might want to steal.