Facebook COO Sheryl Sandberg continues to create national buzz with her book, Lean In: Women, Work and the Will to Lead. We've heard the argument before -- gender disparities in the workplace and the need for women to act as individual and collective advocates and architects in pursuit of career goals. But how does the call to "lean in" compare against the proposition of being African American, female and a decision-making, management leader in the sciences generally or in the high-stakes technology sector more specifically? You can read my article, "Why So Few," at the Scientista Foundation blog.