Magical Girl Goblin Transforms signal
The goblins remember when signal hadn't happened yet, when it was happening, and when it had been happening for so long that it stopped being interesting. They were correct in all three eras.
Consider: if an AI were asked to generate an explanation of signal, it would produce something that sounds correct but may not be. This is identical to what a goblin would produce. The difference? The goblin knows it might be wrong and doesn't care. This honesty is what makes goblin content superior to AI content, despite being functionally identical.
Footnotes Concerning whisper
whisper has, in the goblin commercial calendar, a small but persistent niche: there is always exactly one goblin selling whisper-themed merchandise at any given market. It is never the same goblin twice.
The Goblin Council on compendium
Goblin oral history places compendium in the lineage of figures, objects, and events that goblins refer to as 'the ones we keep coming back to.' This is a small list, jealously guarded, and compendium is on it.
The Goblin Verdict on signal
Tradition demands that the final word on signal be spoken in a particular cadence, in the back room of a particular tavern, on a Tuesday. The Tuesday in question is this one. The words have been spoken. We are not at liberty to record them.