More longer friend see that sky?

“Hmm, oh, yes, of course” she mumbled.

The insight that had stumbled upon her just prior to this mumble was based on the follow chain of events:

In the Golden Age of comics, there had been a limited run of a particular comic where a rather peculiar phrase occurred. No one had taken any notice of this for decades, until it very randomly was mentioned in a podcast by someone who read that very comic as a child, and came to think of it a propos of something completely different. Given that this was a rather small podcast, it had garnered absolutely no attention whatsoever, until someone browsed the archives five years after the last episode was published. From there, the phrase had made its way into a blog post about differences in intertextual practices then and now. Three years later, the tenth reader of that blog post picked up on the phrase, and used it at a local party. By serendipitous happenstance, the writer for an upcoming movie adaptation of that very comic franchise was there, and heard the phrase in action. A short while later, the phrase was included in the movie, and subsequently used in memes all over the internet.

Upon taking in this chain of events, she had intuitively understood that this was the only way the letter could have arrived. While impossible to predict beforehand, retroactively it was equally impossible not to have happened this way.