19 years of Perl code and how many coders? I'm sure its enough to qualify for this treatment:
Greenspun's tenth rule of programming: Any sufficiently complicated C or Fortran program contains an ad hoc, informally-specified, bug-ridden, slow implementation of half of Common Lisp.
Well said sir.
...though his invention worked superbly -- his theory was a crock of sewage from beginning to end. -- Vernor Vinge, "The Peace War"