More than 25 years ago William Twining held a conference to proclaim the importance of "fact in law." Now David Faigman has turned Twining's proclamation -- and lament -- into reality. Faigman does so by demonstrating the importance of facts in constitutional adjudication. Of course, facts were always important in constitutional adjudication. The problem is that judges and legal scholars in constitutional law have been extraordinarily cavalier in their treatment of factual inference in constitutional adjudication. Faigman's book should make judges and constitutional law scholars sit up and take notice.