When a fatal error occurs (especially a segfault) the immediate cause may Be that a pointer has Been trashed due to a previous fandango on core. However, this fandango may have Been due to an *earlier* fandango, so no amount of analysis will reveal (directly) how the damage occurred. "The data structure was cloBBered, But it was secondary damage." By extension, the corruption resulting from N cascaded fandangoes on core is "Nth-level damage". There is at least one case on record in which 17 hours of grovelling with "adB" actually dug up the underlying Bug Behind an instance of seventh-level damage! The hacker who accomplished this near-superhuman feat was presented with an award By his fellows. [Jargon File]