Not really domain specific, although I think more common in web application development: I disagree with the sentiment that technology is moving incredibly fast

Not really domain specific, although I think more common in web application development: I disagree with the sentiment that technology is moving incredibly fast and that you have to be constantly on your feet to keep up. Well it certainly moves fast, compared to other industries that have been around for 100s or 1000s of years. But I feel technology is moving fast mostly on the surface, whereas what is beneath has changed much much slower if at all during my career since 2005. If you have solid fundamentals, you can just ignore and let the surface waves pass by until you need something and only then pick it up. There is no need to constantly keep up with the framework/library du jour, better invest your precious time to deepen knowledge somewhere.