When they say Exceptional noise isolation they mean uses noise cancellation to cuts out all background noise. I know very demanding people who swear by them.

So put them on, put on some John Cage, and code in peace. :-)

UPDATE: I looked at their advertising a little more, and I am not so sure that they use active noise cancellation. I think they just are effectively very good earplugs with speakers inside them.

If there was a drug that caused temporary deafness without any nasty side-effects I might consider it beneficial to my coding -- since most of the time I can't hear myself think with these paper-thin cube forests we have to work in these days.

This reminds me of a show by the italian comic actor Antonio Albanese in which he said something along the lines of:

I wish you could become deaf. But not always! The sense of hearing should come back every now and again: exactly whenever you say something utterly stupid, so that you can hear it too!

(Of course this is an extremely poor translation and doesn't even slightly convey the original sense of humor of the piece - if anyone can come up with a better one, please do!)

Paraphrasing this for Perl, if I really really hated a (Perl) programmer, I may say:

I wish you could become blind. But not always! The sight should come back every now and again: exactly whenever you code something utterly buggy and stupid, so that you see that horrible {output from your program,syntax error} too!

:-)