We mistake narrowness for rigor, but actually we are not rigorous enough. To acknowledge our collective capacity is to take the concept of variability seriously. Not as a neat binary distinction or as slots along a simplified cognitive continuum, but as a bountiful and layered field, where many processes and domains of knowledge interact.
Mike's current post concerns the labeling involved in the preliminaries of selecting of Obama's Secretary of Education, and a plea for involving teachers in the formation of public policy for our schools. If you are interested in education, I hope you'll check it out.