> a technique known for 30+ years in the industry have been

Knowledge sharing with next generations is one of those very tricky things.

For one thing, how would I know where to find this? What book? What teacher? There are so many books, must I read all of them? What if my coworkers awaren't aware of it, how can they share it with me?

Also, an old saying goes, if you're good at something, never do it for free. This isn't exactly a trade secret, but how many people blog about every advanced technique and trick they know? I blogged about how to create real C function pointers from Lua closures, as a way to advertise for my product, but that could very well have been kept a trade secret (and probably should have, as I got 0 sales from that blog post still). Why would anyone want to share this "tiger style" knowledge with newer generations with no personal benefit? Aren't they incentivized to use it secretly, or maybe write it in a book, or blog about it for advertising?

Trade secrets are not necessary to build up interest/visibility momentum. And likely "wasted" for external rewards, without pre-existing momentum.

(External = a marketing/sales bump. vs. Internal = enjoy sharing, writing to self-clarify, writing practice.)

Developing the abilities to repeatedly pick attractive topics (not as widely known as they are useful/interesting), and communicating (in a clear well-received voice/style), until those are validated by increasing visibility and sales/marketing impact, is where to start.

After that, the choice to share a trade secret can be made based on a more predictable reward trade off.

But every post already made, is a post to build on.

I'd say usually you learn those techniques when you join a company as a junior dev and come in contact with engineers with decades of experience and systems that have been in production for years, too.

I think it's when people consider that anything more than 5 years old is ancient and dismiss it that we lose established techniques and knowledge that we are then bound to rediscover again and again.