Today's fashion for green screen and chroma key is not so far removed from the back projection and studio sets of Hollywood's Golden Age.

CNN: Review: 'Oz the Great and Powerful' is more than good enough

Why seek to replicate back-projection, for instance, when those compelled to use it at the time would have been thrilled to find something more realistic?

NEWYORKER: The Good German

It had to be put together from half a dozen towns, a church from here, a school from there, supplemented with mock-ups, masking mattes, blue- and yellow-screen and back-projection.

ECONOMIST: Robert Boyle

Back to the CBO numbers, the deficit projection for another year of trillion-dollar deficit is based on the idea that the law remain the same now and the Bush-era tax cuts not expire.

WHITEHOUSE: Press Briefing