Obvious bull
" Which is a fine way to match compression to a machine's capabilities, but a lousy way to make data portable because if a system only has access to algorithm Y, data created on an algorithm-X-using machine won't be readable. Which could make it impossible to move drives between machines."
Right. Because you couldn't have possibly included (de)compression code for both algorithms in all versions of the OS, and you couldn't have possibly used an extra bit or byte in the volume descriptor or in the directory entries of files to signal which particular method was used to compress them.
Biting the hand that feeds IT
