<p>Photodad, thank you for pointing out my errors. It would behoove me to remember that a careful reading of all the information presented will eliminate most careless mistakes. The common data set percent is indeed based on majors rather than headcount. However, I’m still curious which majors Smith classifies as a “science.” Smith also doesn’t reveal the majors that are included in their statistic that 18 percent of majors are in the sciences.</p>