Left to instinct, leaders groom successors who agree with them. The candidate who nods, who shares the worldview, who would run the place the way the incumbent runs it, feels like the safe choice and the natural heir. Agreement gets read as alignment, as fit, as evidence that the person understands the business. The candidate who pushes back, questions the strategy, and would do things differently feels like a risk, maybe even a threat.
The instinct is backwards. A successor selected for agreement inherits not only the role but the incumbent's blind spots, the assumptions never examined because no one in the room ever examined them. The organization gets a second run of the same judgment, including the parts that were quietly wrong. A successor who disagrees is the organization's chance to correct course, and grooming one is harder and more valuable than cloning yourself.
The romance that rewards yes-men
One reason leaders overvalue agreement is the same distortion that inflates their sense of their own importance. Meindl and colleagues showed that people over-attribute an organization's results to the leader, and rate the same executive as more charismatic when things go well. A leader marinated in that attribution comes to believe their own judgment is the reason for success, which makes a successor who shares that judgment look ideal and a successor who challenges it look like a repudiation. The better the leader has done, the more the romance whispers that the safest successor is a copy.
But the record that earned that confidence was partly luck and partly a system, not pure individual brilliance. Handing the role to someone chosen for echoing the incumbent's views bets the future on the least examined version of the past.
Disagreement needs a safe place to happen
You cannot groom a successor who disagrees if disagreement is dangerous. In most organizations, challenging the boss is a career risk, so the ambitious learn to agree, and the pool of visible successors is pre-filtered for compliance. The people who would push back either left or learned to stay quiet.
The fix is cultural, and the evidence is clear about what it is. Edmondson's foundational work defined team psychological safety, the shared belief that it is safe to take interpersonal risks, and linked it to learning behavior and, through that, to performance. Frazier and colleagues, in a meta-analysis of 136 samples and more than 22,000 individuals, found psychological safety correlated strongly with learning behavior, at rho=.62, and positively with good leader relations, at rho=.44. Where it is safe to disagree, people learn, surface problems, and challenge decisions, which is exactly the behavior that makes a successor worth having.
Ricardo Semler's companies engineered this into the structure. As he tells it, everyone rated their boss anonymously twice a year, and two bad scores in a row cost the manager the role, himself included. Teams could veto a manager. The first year was uncomfortable, and then managers who used to shout started to ask. In a place built like that, a successor who disagrees is not an act of rebellion, it is the system functioning as designed, and the leader gets to see who challenges well before deciding who should lead.
Fit is not agreement
The distinction that unlocks this is between agreement and fit. A successor should share the values and the commitment to the institution. They should not necessarily share the incumbent's conclusions, tactics, or reading of the future. A leader confident enough to develop someone who argues with them, and to take the argument seriously, is building a successor who can adapt the organization to a world the incumbent cannot fully see.
Selecting for productive disagreement also protects against a failure mode boards rarely name: the successor who was chosen precisely because they would not threaten the incumbent's legacy. A leader can groom an heir whose loyalty guarantees the outgoing chief's decisions will be preserved, their pet projects continued, their reputation protected. That is succession in service of the predecessor, not the organization. The heir who disagrees is, among other things, the heir willing to dismantle what no longer works, including the parts the founder was proudest of. That willingness is uncomfortable, and it is exactly what a healthy succession requires.
The successor who agrees with you is comfortable and, often, a mistake. The one who disagrees well, from shared values and independent judgment, is the one worth grooming, and grooming them starts with making it safe to disagree long before the succession is on the table. A leader who has never been challenged by their heir has not tested them. They have only trained them to say yes, and yes is not a strategy for a future that will not look like the past.
Sources
- Frazier, Fainshmidt, Klinger, Pezeshkan & Vracheva (2017). Psychological Safety: A Meta-Analytic Review. Across 136 samples and 22,000+ individuals, psychological safety correlated strongly with learning behavior (rho=.62) and with positive leader relations (rho=.44). https://doi.org/10.1111/peps.12183
- Edmondson (1999). Psychological Safety and Learning Behavior in Work Teams. Defined team psychological safety and linked it to learning behavior, which in turn mediated team performance. https://journals.sagepub.com/doi/10.2307/2666999
- Meindl, Ehrlich & Dukerich (1985). The Romance of Leadership. People over-attribute organizational outcomes to the leader; the same executive is judged more charismatic when the firm does well. https://doi.org/10.2307/2392813