>Each applicant took the test under unknown conditions. You don't know [...] whether they walked in cold or worked with a tutor for months, or whether they came

>Each applicant took the test under unknown conditions. You don't know [...] whether they walked in cold or worked with a tutor for months, or whether they came from a perfectly stable home life or found out the night before that their dog died/parents are getting divorced/worked the night shift at a grocery store to help pay rent. Maybe they struggled with addiction and rebellion in their youth. I'm pretty sure this is (part of) what's being filtered for quite intentionally.