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- I no longer know what forum to address this to, I suppose we've been
- asked to remove the discussion from 'gopher@boombox.micro.umn.edu'.
-
- The arguments that in-band designation of document format is better
- than out-of-band information may apply in the electronic mail
- scenarios, where there is a single sender, multiple recipients, and
- the recipient has no control over what the sender might send.
-
- Instead, imagine, if you would, another scenario, of a WAIS or Web or
- anonymous FTP archive, which wishes to make available the latest
- version of the MIME specification. Let us suppose, in addition, that
- the publishing service has three different representations of the
- document, one marked "MIME rich-text", one marked "postscript", and
- one NetFax. Furthermore, let us suppose (as has been proposed) that
- the document types are marked by their MIME Content-type header
- designation.
-
- If I wish to retrieve the document, say to view it, I might want to
- choose the available representation that is most appropriate for my
- purpose. Imagine my dismay to retrieve a 50 megabyte postscript file
- from an anonymous FTP archive, only to discover that it is in the
- newly announced Postscript level 4 format, or to try to edit it only
- to discover that it is in the (upwardly compatible but not parsable by
- my client) version 44 of Rich Text. In each case, the appropriateness
- of alternate sources and representations of a document would depend on
- information that is currently only available in-band.
-
- I believe that MIME was developed in the context of electronic mail,
- but that the usage patterns in space and time of archives, database
- services and the like require more careful attention (a) to
- out-of-band information about format versions, so that you might know,
- before you retrieve a representation, whether you have the capability
- of coping with it, and (b) some restriction on those formats which
- might otherwise be uncontrollable.
-
- Finally, as much as I've tried to resist, I'll characterize your
- description of my response as 'repeated failure on your part to read
- the words I was writing' as 'inflammatory hogwash'.
-
-