🚀 go-pugleaf

>>  ... the thing to realize here is that there is very little in
>>  common between broadcast TV and computer graphics.

Well, maybe yes, maybe no.  But we'd sure like to be able to hang just
_one_ set of expensive high-resolution HDTV monitors from the ceiling
or side walls of our classrooms and be able to project live or cable
TV, video cassettes, computer graphics and animation, or anything else
in the way of images, with just one common standard instead of a whole
bunch of fancy and expensive interfaces to translate between different
formats.

[By the way, has anyone ever replaced the omnipresent overhead
projector with a TV camera on a little tripod looking down on the
table and projecting whatever you set under it onto classroom
monitors.  Once a classroom had good built-in monitors, you'd never
need the overhead projector and screen again.]