Let's put it the other way though - there's an enormous amount of noise in the interviewing process, even the people responsible for the process admit this. So

Let's put it the other way though - there's an enormous amount of noise in the interviewing process, even the people responsible for the process admit this. So you can spend months preparing for a Google interview but you get put in the wrong role and get rejected for it, you can bump into an asshole in the interview process, you can simply screw up because of the pressure, or maybe they simply have some different set of skills they have in mind for that role. There's a thousand things that can go wrong. So yeah, you can spend ages preparing for an interview, but remember you're probably topping your odds out. A genius well prepared might have a 90% success rate, if they don't prepare that's 0%. But not many of us are a genius and none of us are 0% prepared. So maybe you're actually boosting your odds from 40% to 50%. Then finally, you've got your dream job! Oh but actually 3 things are possibly true. 1: You're surrounded by people who walked the interview in which case you are going to be sprinting to keep up and actually your job is going to be incredibly difficult. 2: You're surrounded by people who also had to desparately prep for the interview for months- so none of you are well suited to the job, actually google is interviewing for the wrong things and actually your life is going to be tough. And 3: Anyone who can't afford to spend months prepping for Google won't be working with you- anyone with any responsibility in their personal life probably won't be able to afford to do this stupid prep work and so they're simply never going to work there, so you're now in this homogenous leet code clique.