What does "the best" really mean? At the end of the day I assume they want to optimize for future success. In that case we humans have been proven to be not ver

What does "the best" really mean? At the end of the day I assume they want to optimize for future success. In that case we humans have been proven to be not very good at that in many other areas. And why can't you select a the best students and then randomly select among them? I don't believe that a 3.8 student will certainly perform worse than a 3.85 student, for example.