I read Abrash's Black book when I was in my late teens and early 20s. It offered some insights into how Carmack operated. That's what made me a fan but I though

I read Abrash's Black book when I was in my late teens and early 20s. It offered some insights into how Carmack operated. That's what made me a fan but I thought of him as a "rockstar" rather than a professional. That's the important bit that changed over several years.