Dunning Krueger Effect is an excellent example of bullshit science and people accepting things that sound right instead of rigorously checking.

Read more here https://www.mcgill.ca/oss/article/critical-thinking/dunning-kruger-effect-probably-not-real

Edit: another source, perhaps more appropriate as a source: https://www.psychologytoday.com/us/blog/how-do-you-know/202012/dunning-kruger-isnt-real

That is not quite how that works. The effect can apply to separate fields of knowledge or separate skill sets separately. You might actually know what you are talking about when it comes to e.g. plumbing but only think you do when it comes to e.g. IT systems.

My mantra is:

"However much I think I know about a subject, I actually know slightly less than that."

One of them (Dunning or Kruger, can’t recall) was interviewed on the You Are Not So Smart podcast. Look it up.

You need to actively and continuously seek out negative but constructive feedback. It’s the only way to keep an objective perspective on your capabilities.

Organizations that are actually serious about quality have processes for this. Organizations that are not pretend to have processes for this ;)

If you are wondering where you are on the curve, you likely aren't too bad. Simply recognizing that you may not know everything is a bit step along the curve

It's not a single curve, but a repeating wave. Every "aha!" moment is a peak and every "fuck this" is a dip. Source: learning music production for years.

I’m going to answer the broader topic: “how do I know what mastery I have in a subject area?”

• Are you able to use parts of a problem in that area to fill in the gaps from experience to find a solution?

• Are you able to identify why an attempted solution to a problem in that area won’t work, and why?

• Do people refer to you with difficult questions about that area?

• Are there areas in that subject you feel don’t make complete sense, that when you ask subject matter experts they deflect (or better, admit they don’t understand it either)?

• Can you identify problems in that subject area that have not been solved, and can, if not take the time to solve them, identify how you would go about solving them?

Each step here shows an increasing level of mastery in a topic.

Post a topic such as this in a discussion forum, then monitor the discussions that follow.

That's the neat part, you don't. It's pseudoscience.

It’s mostly about knowing your limits of knowledge.

If you don’t know about your limits, you’re probably a newbie of the subject. You don’t grasp how much more there’s to learn. You think you’ve learned almost everything.

If you know about your limits, you probably know a lot about the subject. You have learned a lot, but you understand there’s still much more to learn.

Depending on the actual thing you're considering, it's putting the knowledge into practice and having a clear way of evaluating whether you're failing

The effect seems intuitive, however the dunning Krueger effect has been disproven. It is not an accurate theory.