> It´s "behaves like a file vs does not". > > ... But some files do not behave as files
that description seems to assume that there is a real, proper, honest-to-God file (you know, that has the decency to be located on a proper disc somewhere) that defines the "expected" behaviour. a "file" in Plan 9 (or Inferno) is something you can name, open, and read and (perhaps) write.