<p>As the impact factor increases in importance, the next logical step is determining which individual scientists have the most impact. Jos</p>
<p>Mr. José Soler should expect a job offer from USNews pretty soon.</p>
<p>Both Witten (great guy, by the way) and Weinberg received their PhDs in physics from Princeton. Anderson, long a professor at Princeton, received his from Harvard. There are Princeton associations with each of the top three.</p>