HRBot was more thorough than merely looking at the name at the top of each resume, though. It also analyzed the language of the resume in order to find any women who had sneaked past the initial purge. If a candidate included a reference to a women's college or a women's sport team, they were disqualified. If a candidate used language that didn't "read" male -- men are more likely to use verbs like "executed" and "captured" in resumes, for instance -- they were disqualified.
When technicians peeled back the system's code, they found it was weighing a candidate's gender characteristics more heavily than their technical knowledge or coding proficiency. Meaning that a frontrunner candidate could get away with knowing less than nothing about technology. Amazon tried to correct the bugs in the system, but no matter what they tried, its inner sexist would always win. In one of its final iterations, the team had written in so many safeguards against sexism that HRBot lost its mind and start recommending any applicant that was put in front of it. With no guarantee of success, or even that the system wouldn't self-engineer a way around any anti-sexism safeguards, the project was scrapped and placed in the same forgotten storage closet as the Fire Phone and Jeff Bezos' sexts.