Not all knowledge you mastered could help you finding a job. But some of them will help you to become a better engineer. I used to learn clarinet for several y

Not all knowledge you mastered could help you finding a job. But some of them will help you to become a better engineer. I used to learn clarinet for several years when I was yong. And I learned to code a simple CPU core with VHDL and FPGA when I was in college. And now I’m writing C# in healthcare industry. I may never write such kind of experience in my resume. But that helps me when I write projects on waveform editing, or to understand what is “parallel”. So I separate my knowledge for two part. One is something I need to get a job, the other is something I interest in. Which may helps you in future or not. But you enjoy the time in it. As for this book, it is useless especially when you are writing some stupid web server in a programming language like Java or C#. But just my interest about optimization.