Most of them are dated from the 2000s. It's hard to miss that it's on Knuth's website. Just because it's published by one of the gods of computer science does

Most of them are dated from the 2000s. It's hard to miss that it's on Knuth's website. Just because it's published by one of the gods of computer science doesn't mean that it is code in a style that anyone should be encouraged to emulate.