It seems to me that descriptive video and/or expansion of spoken sports coverageincreases the audience, and also allows even those who normally watch
the screen to unglue themselves long enough to get a snack while not
missing anything. Also there are millions of elderly folks who can see but
not well enough to make out exactly where the ball is etc.
Using the analogy of closed captioning, it should be avasilable if you want
it and suppressable if you don't (of course, so should commercials!!)
Seriously, I have alwats found watching stuff that's closed captioned
to be more efficient than without, due to the redundancy.
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