Learning the moment or learning forever

As I look around at my peers in the fields of art and technology, I see many people focused on learning about practical things that have to do with right now.

“What’s the best strategy for gaining followers on X social media platform?” or “how can I best leverage my email marketing list?” or “how to take advantage of loopholes in the stock market“, etc… things that will still be “right now” in 20 years.

But what about the classics? What about the psychology and history that goes into that social media strategy or email marketing, what about the understanding of systems, statistics, and economics that goes into that stock market strategy?

Is it better to learn the surface stuff that in immediately applicable every day? Or should we focus more on deeper learning and studying the things that have stood the test of time?