For example: once you see what the compiler does, you can write readable code without sacrificing efficiency. When you don't really know what's going on under

For example: once you see what the compiler does, you can write readable code without sacrificing efficiency. When you don't really know what's going on under the hood, consciously or unconsciously you write code based on assumptions, which a lot of the time are wrong. It's very hard to exemplify because the mental model programmers have about programming can be very different, and therefore the benefits of a better understanding provided by learning about compilers can have different effects on different people. And still, everyone who has tried recommends learning about compilers. Programming languages are our most fundamental tool as programmers, and yet it's pretty much impossible to make a fair assessment of why they are designed the way they are, why they work the way they do, why they provide the abstractions and structures they provide, until you try for yourself. Understand programming languages better => use them more naturally.