When I first encountered PCB design through self-study, I thought it was just a matter of connecting lines. However, through this lecture, I was able to perfectly establish the organic relationship between schematic design and artwork (layout). In particular, the biggest takeaway was learning how to perform "reasoned design"—such as analyzing the block diagrams and power systems in STM32 datasheets to understand why crystals and decoupling capacitors are essential, and why checking ESD tables is necessary. It was incredibly beneficial because it didn't just teach me how to use the tools; it allowed me to experience the actual professional workflow, from strategic pin mapping using CubeMX to setting up a JTAG debugging environment. Now, I have the confidence to design my own circuits without being intimidated by complex datasheets. Thank you for teaching me so thoroughly!