Do you really understand the meaning of "actually understand "?

You have seen things like "×××" in the past two days. Although programming for many years, if you
Can I really understand "XXX? I am not sure. So I opened the link with excitement.
It is depressing and abnormal.
ArticleTo put it bluntly, the author re-uses his own words to repeat the things in the textbooks.
Some are even more powerful: Ctrl + C, CTRL + v.
Of course, I am not opposed to the existence of such an article. On the contrary, I think the existence of such an article is a good thing.
You can give beginners some advice. But do not give things as if you really understand things like "×××.
As if. If you don't listen, I will repeat the things in the textbook. You don't know much about "XXX.
Even if you add your own understanding to the description process. That is your own understanding. Get at best
My questions on "×××. This year's hype is prevalent. Is technology sharing required ???
So I have to ask you if you really understand the meaning of "actually understand "?