Why use Scala instead of MPEG video?

It would seem that traditional video production and MPEG would be the content-vehicle of choice for plasma signage networks, and not Scala. Not so! Scala will give you a content-vehicle that is so easy to produce for that you can keep fresh material going 24 hours a day, 7 days a week, on-schedule, and under-budget. Anyone who has gone through the grief of "updating" video knows what we're talking about. Can you imagine producing the video, encoding the video, and re-transmitting huge MPEG files every time you want to change the price in the blue light special? Not only does Scala solve this problem with an easy-to-produce-for medium, but you can still include your MPEG video as Scala content! You can even delegate the price-updating tasks to non-production people such as administrators or accountants without any negative impact on the carefully designed multimedia-programming schedule. Think of Scala as your base-line way of keeping all your content fresh, and your screens always running, without becoming deathly repetitive.