"We kept doing provocative studies that gathered dust," he recalls.

Still, he has written a provocative and often persuasive study of the philosopher's apprenticeship and the early development of his thought.

And though the authors draw no conclusions, this provocative study suggests that the warm, new world might not be unpalatable.

This "provocative study" is history on the grandest scale.

The case has not been proved, but the issue has been raised once again by a provocative new study.

An insightful and provocative study of major changes taking place in Cuba today.

A small, provocative study seems to say so.

A provocative new study of the reasons big law firms have so few minority partners claims there is a simple answer: grades.

"A fine, provocative study of the Israelis" that is also a "painful personal drama."

The result was a disjointed, intermittently provocative study that raised far more questions than it answered.