A possible literary reference behind the Castigliani brothers, meaning, apparently, "caste people."
I've been reading through a book on Lynch, Beautiful Dark, which states repeatedly the influence the author Franz Kafka had on Lynch and his style. It was a long-standing dream of Lynch's to film Kafka's The Metamorphosis.
Kafka's last novel was The Castle. Like The Trial, it pictures the universe as a strange, vast bureaucracy. The whole scene with the Castigliani brothers is textbook Kafkaesque.
http://en.wikipedia.org/wiki/The_Castle_%28novel%29
"Dark and at times surreal, The Castle is about alienation, bureaucracy, the seemingly endless frustrations of man's attempts to stand against the system, and the futile and hopeless pursuit of an unobtainable goal."


