A key testable prediction was that a folded protein's carbonyl groups should be largely converted to hydroxyl groups; however, spectroscopic and chemical experiments showed that this prediction was incorrect.

None of these ideas are considered scientific hypotheses; by definition a scientific hypothesis must make testable predictions.

He was a leader in critical behavior theory and developed methods for distilling testable predictions for critical exponents.

One must always add auxiliary hypotheses in order to make testable predictions.

They then explore the consequences of these ideas and work toward making testable predictions.