I couldn't believe that he was the one who worked out that theory.

I have disproved that theory more than 100 times in the last month.

But the angle at which be was lying makes that theory impossible.

"My analysis of the particles supports that theory," said Data.

Perhaps it would be best if I simply laid out that theory for you?

Well, that theory lasted for all of, say, a quarter.

His strong, capable sister, Katie, proved that theory wrong every day.

You've just got have that basic fundamental theory of how you're going to handle it.

Some people say it is cyclical, and developments support that theory.

But we've virtually discounted that theory now, although we're still checking it out.