HN tends to gives this perception of rapid change because you're always hearing about hot new tech and how great it is from the various tech evangelists. It's a side effect of their faith/vision in their own tech that you feel like you're missing the train.
However, I've been following HN for 7.5+ years now, and change is hardly as fast as you think. There really is nothing new under the sun, and you see the same core principles (and human needs) being expressed as the underlying technology changes. The core principles of functional programming have been around since the 30s as lambda calculus, and since the 50s with their initial expression as LISP. It's better to learn FP to add a new way of thinking about problems to your toolbox, rather than treating it as a panacea of programming.
If you're feeling lost in the sea, define your lighthouse. HN will most certainly have you paralyzed by the many waves of every new choice if you haven't defined a clear vision for how you want to harness your finite energy.
However, I've been following HN for 7.5+ years now, and change is hardly as fast as you think. There really is nothing new under the sun, and you see the same core principles (and human needs) being expressed as the underlying technology changes. The core principles of functional programming have been around since the 30s as lambda calculus, and since the 50s with their initial expression as LISP. It's better to learn FP to add a new way of thinking about problems to your toolbox, rather than treating it as a panacea of programming.
If you're feeling lost in the sea, define your lighthouse. HN will most certainly have you paralyzed by the many waves of every new choice if you haven't defined a clear vision for how you want to harness your finite energy.