sad treacherous computing day

[Alfred M. Szmidt]

   DRM and TC can be used in useful ways, again it is not the
   technology, it is the use of the technology that can be good or
   bad.

What are these useful ways one can use DRM and TC?  The whole point of
TC and DRM is after all to prohibit a user from updating their
software, or from listining to their favourite song on their music
player of choice.  I cannot see anything useful about these things.
Encryption doesn't even come into the picture, since you can do TC/DRM
without encryption; I think this is what Tivio did, they just signed
their binaries, and the hardware only allows running binaries signed
by that entity.