Godzil (./1326) :
http://arstechnica.com/reviews/2q00/macos-qna/macos-x-qa-2.html

Tiré de ce document:

Mac OS X supports both, but Apple "strongly encourages developers to use file extensions as alternative means for identifying document types." Apple's reasoning is that the Internet, the new "lowest common denominator" of interoperability, does not support HFS-style attributes and forks; it deals only in flat files. Where the overwhelming majority of "flat file" volume formats (i.e. Windows/FAT, Unix/UFS) failed to change Apple's thinking, the pervasive connectivity of the multi-million-node Internet has succeeded.

(Et cette phrase était déjà en orange dans l'original.)