Researchers in experimental finance can study to what extent existing financial economics theory makes valid predictions and attempt to discover new principles on which theory can be extended.

"Is that a valid prediction, Colonel?"

It is to be done by 'the development of a 'theory' or 'hypothesis'that yields valid and meaningful (i.e. not truistic) predictions about phenomena not yet observed'.

It is too early to make valid predictions whether the demand for more applications will translate into more submitted applications.

"I'm hardly one to offer a valid prediction on the outcome of the Operation Wild Rose 195 revolution," Felicia said.

This picture is much more convincing, especially since it recaptures all the valid predictions of the Dirac sea, such as electron-positron annihilation.

Yet good oratory demands not just passion but hard information and valid predictions.

I ask only that you perfect your psychohistorical technique so that mathematically valid predictions, even if only statistical in nature, can be made.

Because such hypotheses and descriptions extract only those crucial elements sufficient to yield relatively precise, valid predictions, omitting a welter of predictively irrelevant details.

It's what happens when a sigma becomes a little more regular than usual, so that a simpler equation will give a longer valid prediction.' '