So you've been a developer for years, aced all those LeetCode problems, built entire systems from scratch... and then someone asks you to write code without your IDE's autocomplete and AI assistant. Suddenly your brain goes completely blank and you're staring at the screen like it's your first day of CS101. We've all become so dependent on tools that actually writing code from memory feels like being asked to do long division without a calculator. Sure, you know the concepts, the architecture, the best practices... but the exact syntax for opening a file? Reading command line arguments? That's what Stack Overflow and Copilot are for, right? The interviewer probably thought they were getting a senior developer. Instead they got someone who can architect a distributed system but can't remember if it's array.length or array.size() without checking.