The article states that they don't even ask at all, so you cannot assume that the "restricted subset" has all high GPA candidates. Within that subset could be high school dropouts who are math and/or CS geniuses, for all we know.
> I can't think of anyone I know that could do well in the Google interview process but could not get good grades.
There's a lot of reasons people don't get good grades that has little correlation to their ability. People get bogged down by life, develop entrepreneurial interests outside of school, or have little interest in academics. I've met people who are brilliant software engineers and couldn't or wouldn't complete a semester of school.
> I can't think of anyone I know that could do well in the Google interview process but could not get good grades.
There's a lot of reasons people don't get good grades that has little correlation to their ability. People get bogged down by life, develop entrepreneurial interests outside of school, or have little interest in academics. I've met people who are brilliant software engineers and couldn't or wouldn't complete a semester of school.