Say I pass the invert a tree question. Does that prove I am good? That I can design a product, listen to customer requirements, come up with ideas that elude others, read a research paper and turn it into something commercial, solder a circuit board, make a schedule, mentor junior engineers, write documentation? No. All inverting a tree tells them is I studied trees recently, and/or I'm at least superficially clever.
Google lets go of plenty of people. They aren't making perfect hires.
They have publicly admitted there's no correlation between their hiring process and outcomes. I'm not even clear [why] we're still debating this.
Other than to wonder why they still haven't done anything about it. (I interviewed there ~8 years ago, pre Android when they were looking for deep mobile expertise and got flunked out on a similar problem. I am not at all interested in working for them now)
To show that there is a correlation you have to quantify both hiring process evaluation and job performance. Since both are elusive quantities that are hard to quantify, showing there is no correlation may just mean that measurements are done poorly. E.g. when job success is measured by boss satisfaction.
Say I pass the invert a tree question. Does that prove I am good? That I can design a product, listen to customer requirements, come up with ideas that elude others, read a research paper and turn it into something commercial, solder a circuit board, make a schedule, mentor junior engineers, write documentation? No. All inverting a tree tells them is I studied trees recently, and/or I'm at least superficially clever.
Google lets go of plenty of people. They aren't making perfect hires.