> 1) Most companies (for legal reasons) don't tell candidates why they weren't offered a job. Maybe it was because of the binary tree question, but maybe it was for some other reason.
So when I was declined at Google I knew people who worked for Google. One looked up my profile in whatever system they used and the other simply asked the interviewer why. OP may have done the same but as you say it's unclear either way but knowing is still possible.
> 2) Homebrew is a Mac-only product, so the likelihood that 90% of Googlers use homebrew is very low. Moreover, Google does not track the software its employees download onto their laptops, so there's no way they would even know the percentage.
Most of the people I know at Google use Macs so I don't see why not. I don't know what the majority of them use but a good chunk at least do.
As far as tracking he could simply be tracking it himself and comparing his results of known Google IPs to employee counts. Not as accurate but might give a rough estimation. He may have further analytics based on data collected (if collected) by each machine.
So when I was declined at Google I knew people who worked for Google. One looked up my profile in whatever system they used and the other simply asked the interviewer why. OP may have done the same but as you say it's unclear either way but knowing is still possible.
> 2) Homebrew is a Mac-only product, so the likelihood that 90% of Googlers use homebrew is very low. Moreover, Google does not track the software its employees download onto their laptops, so there's no way they would even know the percentage.
Most of the people I know at Google use Macs so I don't see why not. I don't know what the majority of them use but a good chunk at least do.
As far as tracking he could simply be tracking it himself and comparing his results of known Google IPs to employee counts. Not as accurate but might give a rough estimation. He may have further analytics based on data collected (if collected) by each machine.