When hiring, top firms like McKinsey value a candidate's ability to articulate a deliberate, logical problem-solving process as much as their past successes. Having a structured method shows you can reliably tackle novel challenges, whereas simply pointing to past wins might suggest luck or context-specific success.

Challenge the 'hire slow' mantra. Hiring is an intuitive guess, so act quickly. Once a person is in the organization, their performance is a known fact, not a guess. This clarity allows for faster decisions—both in removing underperformers and, crucially, in accelerating the promotion of superstars ahead of standard review cycles.

Before hiring for a critical function, founders should do the job themselves, even if they aren't experts. The goal isn't mastery, but to deeply understand the role's challenges. This experience is crucial for setting a high hiring bar and being able to accurately assess if a candidate will truly up-level the team.

Over a long career, great leaders accumulate a "snowball of talent"—A-players who follow them from one venture to the next. This becomes a powerful litmus test when hiring executives: if they have no network of past colleagues eager to join them, it's a major red flag about their leadership ability or the quality of their past teams.

Experience taught Herb Wagner that great leaders consistently surprise on the upside. He now weights leadership quality far more heavily, assessing CEOs not by interviews or charisma, but by their verifiable track record and through trusted backchannel references who have worked with them directly.

Unlike a functional manager who can develop junior talent, a CEO lacks the domain expertise to coach their entire executive team (e.g., CFO, VP of HR). A CEO's time is better spent hiring world-class leaders who provide 'managerial leverage' by bringing new ideas and driving their function forward, rather than trying to fix people in roles they've never done.

Successor CEOs cannot replicate the founder's all-encompassing "working memory" of the company and its products. Recognizing this is key. The role must shift from knowing everything to building a cohesive team and focusing on the few strategic decisions only the CEO can make.

For high-level leadership roles, skip hypothetical case studies. Instead, present candidates with your company's actual, current problems. The worst-case scenario is free, high-quality consulting. The best case is finding someone who can not only devise a solution but also implement it, making the interview process far more valuable.