• •Bryan Cantrill argues that intelligence is insufficient for success without the 'soft' skills of empathy, humility, and effective communication.
• •The discourse highlights that technical brilliance often leads to 'brilliant jerks' who can negatively impact team velocity and culture.
• •It remains an open question how engineering organizations can formally measure or incentivize these interpersonal skills during hiring and promotion cycles.

Bryan Cantrill’s 'Intelligence Is Not Enough' posits that technical aptitude is only one component of a successful engineering career. Unlike conventional emphasis on IQ or coding prowess, this perspective prioritizes team cohesion and the ability to work constructively within a group. However, technical leadership often lacks a standardized rubric for evaluating these human-centric behaviors, making them difficult to scale across large organizations. The long-term challenge for tech companies will be determining whether these 'soft' skills can be coached or if they remain an inherent selection bias.