Ruby developers I've worked with who've done exactly what the guy in the article did? "Yo Sam, what's the .pl file. Is that from a tool? Naw, the perl library

Ruby developers I've worked with who've done exactly what the guy in the article did? "Yo Sam, what's the .pl file. Is that from a tool? Naw, the perl library is really nice...I'd have had to write the parser if I did it in Ruby" Most of the Ruby developers I know are in their 30's and all but 2 know perl. That may be the difference.