My knowledge gets outdated: APIs change, the top of the hour is a different one.

Skills and especially abstract skills don’t get outdated as fast: Writing cuda kernels is surprisingly like the stuff we did in my first ever C class 25 years ago and I am still reading doc the same way my teacher taught me in 7th grade.

The more you look the more things are the same. All that is done was done and has been done before; there is nothing new under the sun.

Beyond that, the essay is a rambling mishmash of ideas and unsourced assertions with no real point to it.

It's not like companies are molting their stacks every two years or something. If you are hired today, you skill and knowledge will evolve as the company evolves

The things I've learned about the JVM in the 2000's are still mostly true, perhaps with a bit of tweaking.

The things I've learned about process, project management, some distilled concepts around refactoring, testing - all still very valuable and as true as when I learned them. Perhaps not the specific tools, but the concepts are valuable.

Learning C decades ago still has lots of value. Not to mention SQL - come on.

Learn that cool JS tech stack a few years back? Yeah, it's probably dead or radically changed. That integration with Company X? Same.

So clearly there's some distinction to be made here. People are still programming in FORTRAN in some niches. You can decide to invest in boring and stable approaches, or live on the bleeding edge relying on someone's weekend vibe code session.

"courtesy of Harvard Business Review" - there's your problem. Don't look to some MBAs to give you nuanced tech insight. The author of this article: "Harald Agterhuis" is just some recruiter. Of course he's got an incentive to push this BS.

My recommendation? Flag this low quality article.

On a personal level, the fundamentals will be useful for your entire career, and the more you know, the faster you will be able to get the skill-du-jour. But the idea is that on your résumé, expect to change half of the lines in your "skills" section every 2.5 years, even if it takes you no more than a few hours to add these lines.

It also brushes aside tech in industries like defense, aviation, assembly lines, etc... where you have big, expensive machines, certifications, and projects that span decades. I wouldn't be surprised to find some Fortran code somewhere in the foundries that build the latest AI chips as EUV lithography literally took decades of R&D before it went to production.

And that’s just the tangible stuff. Not to speak about DDD, TDD, clean code, cicd, debugging, and a large etc.

My skills don’t degrade. Each thing I have learned in the past helps me when learning the next hot thing. These “outdated” skills are an investment, not a waste; they are what makes me being a software engineer with X years of experience.

Even so, there are specific skills you can learn that are older than most people and will continue to be relevant, like SQL, vi, the terminal.

Okay, he was obviously very new to the field and had no idea, but it illustrates how the field progressed in the past 10 years, and a person who is just joining has very similar starting line to old-timers. The breadth of knowledge I have is of course extremely useful and I am able to get new concepts really fast, as there are many similarities. But the market in general does not care that much really.

Also, skills and knowledge are different things, right? I’d believe that half the skills picked up in a fast-growing field are obsolete after a couple years.