Not everyone subscribes to the multi-bubble reflation theory, however.

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But Ed Bark, a TV critic behind the TV review website Uncle Barky's Bytes, said that CBS has captured the younger demographic with multi-camera sitcoms like "The Big Bang Theory" and is doing well with its Monday night lineup.

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We have developed a comprehensive theory of change, and have a multi-year plan for validating it.

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One theory is that the city is captured by its history, locked into multi-generational patterns of bad behaviour that get passed from parent to child.

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The theory is that Nguyen groomed some specific patents to appeal to Apple in the area of multi-device content sharing.

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Thimerosal, a mercury preservative found in the multi-dose vial H1N1 vaccines, has been controversially linked to autism, though no studies have proved that theory.

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