Josh Kaufman, a business expert and author of "The Personal MBA." Kaufman discusses his book, arguing that understanding fundamental business principles—value creation, marketing, sales, value delivery, and finance—is crucial for career advancement and entrepreneurship. He emphasizes the importance of understanding human psychology in marketing and the value of iterative experimentation. Kaufman critiques traditional MBAs, suggesting practical, self-directed learning is often more effective and efficient. He highlights the significance of identifying unmet needs, focusing on benefits over features, and minimizing early-stage complexity.