And then cakyol said:
"There is error detecting & correcting logic in all digital gear."
Yes, of course there is, but what does that have to do with digital cables? It is not the job of digital cables to correct errors in the digital stream.
What people usually mean when they say this, they think digital is perfect, since any errors are detected and corrected. Almost never do you find one who understands CD is an analog format in which timing matters.