Avichal Garg argues that professionals who understand one or two layers deeper in the technology stack than their immediate role gain a distinct advantage, citing product designers who grasp JavaScript, CSS, and React as more effective than those who don't. He explains that top backend engineers understand API architecture and infrastructure, while the best data engineers understand chip design and cooling systems, illustrating a consistent pattern across disciplines. Garg emphasizes that knowing computer science and writing good code isn't about doing the work yourself, but about gaining insight into constraints and possibilities that shape better decisions. How do you think this principle of going deeper in the stack applies outside of software roles?