<p>The problem is, you can't continue the fashionable "Noah's Ark" approach to admissions (two of these ... and two of those), maintain gender balance, take care of the legacies, go after the "economically disadvantaged" etc and still field a football team, without expanding.</p>
<p>Princeton wants more "greenhaired people" in addition to lax players and "eating club" types, and has concluded that expansion is the only way to make it work.</p>
<p>Harvard, apparently, wants to be the school of choice for the world, not just the nation, and thus contemplates a 10% expansion to include more internationals.</p>
<p>Yale is straining to keep up, although it announced the usual "50 states and 50 foreign countries", 50-50 male/female split etc, though I notice the "diversity" numbers were down a hair, and the fraction receiving financial aid declined.</p>
<p>Bottom line: these schools can's satisfy existing constituencies <em>and</em> become more "diverse" without expanding.</p>