I don't think you need more than the Trainer and 7Sage. Diagramming some conditional PF questions and all their ACs should help you kill those two birds with one stone.
I use them and no melting yet. I've left my backpack in my car where, in the summer, the temp can get up to 150 or so pretty quickly. I'm guessing old or ...
Stanford seems much more concerned with soft factors and is thus considered an admissions "black box." If you have killer rec letters and a solid personal statement, I don't think it's worth it
@pritisharma I like my coffee like I like my pearl jam albums. Black! Anything other than that should be considered a cardinal sin. On the real though I might give heavy cream and/or tea a try. It sparked my curiosity.