I came across this interesting article titled No One Knows What the F*** They're Doing by Steve Schwartz. Interesting in the sense that I've been feeling like a fraud, and this article says exactly why.
I thought the article was so good, I sent it to the entire department I worked in.
I had recently managed to hack the Java framework of the department, and a colleague had sent me an IM message, urging me to keep doing what I do and praise me. I felt like a fraud because I know there are a lot of stuff I don't know. In my younger years, I felt damn smart because of what I think I know.
Nowadays, I feel slightly less apprehensive that I still don't know a lot of stuff, and I'm somewhat okay with it.
In 2017, with the release of Delphi 10.2 Tokyo, Embarcadero introduced a specialized implementation of the Observer pattern into the System.Classes unit. While it has been in the wild for 9 years, it remains a "hidden" architecture for many, primarily because it serves as the invisible engine behind LiveBindings. Other than live bindings, you can also use the Observer pattern as a way to update component settings to the Windows registry, an .ini file, or persist it elsewhere.
System.Classes