Quite right. In fact, I'd go further and suggest if you are not in the top half of your class after the first year, quit. If by "top half", you're talking abou

Quite right. In fact, I'd go further and suggest if you are not in the top half of your class after the first year, quit. If by "top half", you're talking about grades, I disagree. If you're talking about research potential then I agree with you.