"Do you have any possible theories as to why these failures occur so often?"

They've got a possible theory about why that estimate of yours didn't work.

Now it is trying to undercut all possible theories the defense might raise.

"I have thought of many possible theories, but not one that really satisfies me."

Several possible theories have been advanced over the years.

It's just a matter of trying to find the simplest (and therefore most general) possible theory.

"The ship's computers are working on possible theories," he ventured.

Within their group, they develop possible theories or hypotheses to explain the problem.

There are several possible theories as to the connection between the Danes and the origins of the church.

It was archaic, butitwas what the only possible theory called for.