The dream was almost certainly a vision about the famous doppelganger guy getting hit. Otherwise there is no literary reason to have the characters mention him.
@AnonymousWeeaboo I appreciate your providing sources. I was not able to look into the Norwegian study as much of the research group's website was in Norwegian, and I found it somewhat difficult to find the relevant articles.
However, after reviewing The National Survey of Families and...
@So-chan "Anecdotal evidence!", cries the commenter who has given no evidence at all.
@AnonymousWeeaboo No, l said you weren't well-educated on the subject, which is a statement I still stand by.
And I would appreciate a link or name for any of these studies if you didn't mind.