In a highly technical company, having a leader who is not a domain expert is invaluable. This individual can challenge the team's ingrained way of thinking, ask fundamental questions, and ensure the company remains grounded in customer needs rather than getting lost in purely technological pursuits.

A frequent hiring error is choosing candidates because you believe they possess "magical knowledge" from their specific background that will solve all problems. These hires often fail by rigidly applying an old playbook. Prioritize adaptable, curious problem-solvers over those with seemingly perfect but ultimately static domain expertise.

When a CEO finds themself repeatedly telling a functional head how to manage their team, the problem isn't the team's execution—it's the leader. The correct action is to replace the leader, not to become a micromanager. Constant intervention indicates a fundamental misalignment or capability gap.

Leaders who were correct once in a specific area, like mobile UX in 2015, tend to believe their expertise is universally applicable. This cognitive trap leads them to make poor, unsubstantiated decisions in new domains like AI strategy.

To counter a leader overreaching from past success, internally ask: 1) What was their specific original success? 2) How different is this new domain? 3) What new evidence, not just opinions, do they have now? This framework separates true expertise from overconfidence.

While experience builds valuable pattern recognition, relying on old mental models in a rapidly changing environment can be a significant flaw. Wise leaders must balance their experience with the humility and curiosity to listen to younger team members who may have a more current and accurate understanding of the world.

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.

A former CFO who becomes CEO must consciously delegate and distance themselves from their old function. Continuing to be anchored in their past discipline is a liability that prevents them from adopting the necessary broad, enterprise-level perspective.

A common belief in succession planning is that the second-in-command is the natural successor. TeamShares found this wasn't consistently true. Often, the operations-focused "number two" is not ready for the full financial and strategic responsibility of the CEO role, leading TeamShares to hire external presidents for most of its acquired businesses.