<p>I don’t believe graduating in two years is optimal, even if someone did manage the feat. There are a number of research opportunities which someone working that hard on classes wouldn’t be able to take advantage of, and that might hurt them more than the benefit gained by graduating a year or two early. </p>
<p>At any rate, it’s not something the vast majority of Caltech students (myself included) would be capable of accomplishing, and certainly not something most would want to.</p>