Surviving data structures feels like a victory until you realize it's just the warm-up act. The real bosses are waiting: algorithms that hit like a truck, compilers that'll make you question your career choices, and operating systems lurking in the shadows like the final boss you're not remotely prepared for. Every CS student thinks they've conquered the mountain after their first linked list, only to discover they're still in the tutorial level. The industry veterans just watch with coffee in hand, knowing exactly how this story ends.