Reed Hastings argues board members lack daily context to add value with advice. Their true function is to be an "insurance layer," with their most crucial responsibility being the decision to replace the CEO if needed. They must learn the business not to advise, but to be prepared for that moment.

A board member's role is to provide outside perspective to help a CEO think through a problem, not to make the decision. CEOs who ask 'what should we do?' risk abdicating responsibility to someone who lacks the deep operational context to make the right call. This can be destructive to a CEO's development.

According to Snap's Chairman Michael Lynton, a board chair's biggest mistakes are not operational but governmental. Their key role is to manage the board itself—by ensuring the right questions are asked of management and, crucially, by preventing individual board members from meddling in company operations.

Effective private equity boards function as strategic advisory councils rather than governance bodies. Board members are expected to be co-investors who actively help with strategy, networking, and operational challenges like procurement, making them a key part of the value creation engine.

For former operators who become VCs, the biggest challenge is to stop acting like an operator. The 'Hippocratic Oath of Venture' is to 'do no harm.' This means staying out of the way when a company is executing well and providing resources rather than unsolicited operational input.

Many VC firms hire former operators for their expertise, but success isn't guaranteed. The best operator-VCs avoid the urge to "backseat drive" the companies they fund. Instead, they leverage their experience with extraordinary humility, acting as a supportive advisor rather than a replacement CEO.

Horowitz cautions against board members having daily, high-frequency interactions. A CEO ultimately must stand alone and develop high conviction to make difficult decisions. Constantly looking to an outsider for answers can stunt this growth and lead to poor outcomes, as the outsider lacks full context.

Jack Dorsey's advice for founders is to shift their mindset when choosing investors for board seats. Prioritize the specific person and your working relationship over the venture firm's brand, because this is a permanent and high-stakes "hire."

An investor's power over a portfolio company is fundamentally limited and primarily negative. While a VC can block a founder's actions, such as through board approval or withholding capital, they cannot force a founder to take a specific path, even if it seems obviously correct. The role is to advise and assist, not to command or execute.