I've watched some of the interviews they put up on youtube, but one thing I found lacking was an actual answer of "I would pass you, but maybe 20% of my peers w

I've watched some of the interviews they put up on youtube, but one thing I found lacking was an actual answer of "I would pass you, but maybe 20% of my peers wouldn't" vs. "This is a hard no for me at my current company, but previous companies you have a 50/50 shot". Instead all the feedback seems like "you did good, but you should work on..." Regarding the 'pay later' thing, I wonder if the term is too short? Let's say theoretically I sign up, completely and utterly bomb the first mock interview, and decide I need to spend 3 months doing hackerrank every weekend. Then I do another one, and i'm doing better, by the time I get the actual job the time period has expired?