Here’s the latest in the long-running battle between Goldman Sachs and the women who sued the firm in 2010 for gender discrimination:

Both sides in recent weeks have filed dozens of briefs and exhibits, mostly focused on the women’s request earlier this year that the court grant them class status so that they can represent 2,300 current and former associates and vice presidents who allegedly were discriminated against in pay and promotion policies. Among issues that have come up: Whether women at so-called “extreme jobs” like the ones at Goldman simply can’t cut it.

Goldman trotted out Michael A. Campion, a Purdue University management professor, to make the  case. While Campion testified that he did not have the data to draw a conclusion as to whether women make less because of the demands of an extreme job, he said it is “plausible” and that “it’s a consideration that’s not minor.” I talk about Campion’s theory in my column today for TheStreet Foundation.