Jan, your insights on addressing the poison of a rotten apple in a startup's positive culture are invaluable. The signs you highlight, from morale decline to increased staff turnover, serve as crucial warning signals. Your proactive strategies, such as thorough recruitment scrutiny and the concept of "The Offer," provide practical ways to nip the issue in the bud. Your emphasis on the insidious nature of the damage and the need for timely action resonates deeply. Thank you for sharing your experiences and actionable advice on maintaining a healthy and thriving workplace culture.