In extreme environments like concentration camps, survivors observed that strength of character was the primary determinant of survival, more so than physical strength or intelligence. This principle applies universally; investor Arnold Van Den Berg prioritizes hiring for character indicators like discipline over traditional credentials.

Inspired by Shackleton's "hazardous journey" ad, frame difficult roles by being brutally honest about the challenges. This messaging acts as a filter, attracting candidates who are motivated by the struggle and the personal growth it promises, rather than deterring them.

The purpose of quirky interview questions has evolved. Beyond just assessing personality, questions about non-work achievements or hypothetical scenarios are now used to jolt candidates out of scripted answers and expose those relying on mid-interview AI prompts for assistance.

Chipotle CBO Chris Brandt filters candidates based on a simple, visceral question: 'Would you be willing to walk into a conference room with them at 5 PM on a Friday?' This test prioritizes collaborative spirit and cultural fit over pure skill, ensuring new hires won't disrupt team dynamics, even if they look good on paper.

To succeed in its proprietary sourcing model where the default answer is often "no," TA Associates specifically hires individuals who have overcome adversity. They believe this trait builds the necessary resilience and motivation to persist through constant rejection without losing drive.

Firms claim they want product leaders who challenge the executive team and have strong opinions. In reality, their interview process often screens for low-risk communicators who can absorb pressure without creating friction, undermining the stated goal.

The chaotic, underdog nature of a startup is a binary filter. Frame this reality honestly during interviews. The right candidate will be energized by the challenge, while the wrong fit will be stressed. This question quickly reveals cultural suitability.

Beyond IQ and EQ, interview for 'Resilience Quotient' (RQ)—the ability to persevere through setbacks. A key tactic is to ask candidates about their proudest achievement, then follow up with, 'What would you do differently?' to see how they navigated strife and learned from it.

The CIA intentionally seeks individuals who can operate in legal and ethical gray areas, but not full-blown sociopaths who are uncontrollable. This trait enables them to perform tasks like breaking into foreign embassies, which a 'normal' person would refuse to do.