And what do you do if you do not understand an explanation?

You either request: Give me a complete design.

Or you write: I don't get that concept. Can you describe it in another way.

As long as the OP of that thread did ask questions, he got answers. As soon has he didn't, people changed the focus to other things.

A student can't sit silent at the back of a class room, never asking a qeustion, and expect to keep up with the other students. That is a choice to make - ask for more information, or expect the assignment to either go away or get magically supplied.

No, this is not a language barrier. Point to any threads where the OP don't get help because of language problems - except of course when the OP isn't able to tell - at all - what his problem is. Sorry, but no forum can help with something we don't know what it is.

Point to any threads where the OP don't get help because of slow responses. Unless you with slow responses means months, in which case the thread gets auto-locked.

You are constantly inventing arguments, but never backing them with facts. And when you goofs up too badly - like jumping in and giving me a scolding for laughing at myself - you suddenly grow silent and pretends that it is raining.

Start doing your home work. Show links to people who have not received help. And explain in what way they were wrongly treated, or in what way they were not helped, and what help they should have received. But do consider that little issue of cheating with school assignments - that really is an ethical issue a number of people are not willing to ignore.