In the Soul of a New Machine Tracy Kidder relates how toward the end of the development of the Nova that Data General started rejecting applicants who had anything computer related as a hobby or spare time interest. If memory serves, they believed on the basis of experience that people with a broader range of interests were better team players and more resilient to burn out.
While this may be technically accurate, the rest of the descriptions on how they interviewed & hired was brutally narrow-minded and biased. You're missing the part where they basically didn't hire anyone with a life outside of computing because you were being hired for an all-consuming death march.
