Item 7 is SO important! One thing I learned after all these years is that it's impossible to be an expert at everything, and that's okay. You need to focus on specific technologies you use on a daily basis while keeping an eye on the general landscape just to have a bird's eye view of the current technologies. Most of the times, you just need to know the tools exist and how to start using them. You will inevitably face a challenge and remember you saw something about a library, framework, app, etc that does most of the job for you. It may save you and your co-workers several days or even weeks of work.
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