The question that Eric Jensen addresses in his article is whether brain research can provide a basis for educational practice. He debates John Bruer, president of the James S. McDonnell Foundation, and argues that brain research can, in fact, provide a basis for what educators do. Most of Jensen's article is devoted to showing ways in which brain research can provide a basis for educational interventions. In this article, the author states that it was a wrong question. The question is not whether educators can take brain-based or other biological research and derive educational implications from it. The right question is whether they can take such research and derive "unequivocal" educational implications. Here, the author does not doubt that brain science has implications for education. The problem, he shows, is that brain research has yielded too many contradictory findings for educators to know with certainty which policies and practices to adopt. (Contains 15 endnotes.)