"Any sufficiently complicated C or Fortran program contains an ad-hoc, informally-specified, bug-ridden, slow implementation of half of Common Lisp."
And this article gives us Robert Virding's First Rule:
"Any sufficiently complicated concurrent program in another language contains an ad hoc, informally-specified, bug-ridden, slow
implementation of half of Erlang."
So I'm going to go ahead and propose this:
"Any sufficiently memorable technical insight about a programming language contains a slightly adapted, informally-specified, semi-controversial, less-eloquent adaptation of half of Greenspun's Tenth Rule."
"Any sufficiently complicated C or Fortran program contains an ad-hoc, informally-specified, bug-ridden, slow implementation of half of Common Lisp."
And this article gives us Robert Virding's First Rule:
"Any sufficiently complicated concurrent program in another language contains an ad hoc, informally-specified, bug-ridden, slow implementation of half of Erlang."
So I'm going to go ahead and propose this:
"Any sufficiently memorable technical insight about a programming language contains a slightly adapted, informally-specified, semi-controversial, less-eloquent adaptation of half of Greenspun's Tenth Rule."
Call it Xich's First Rule of Technical Quotes.