I may look rude in English, because i'm not in English country. I am sorry this. But I have to say what I need. If Unity find it difficult to maintain Wiki, I think Unity should at least give an easier example. The sample is to show the performance. and is not to the tutorial for the primer. This is because there are already a lot of developers confused. The principles are already found everywhere. However, there are not many shared codes, and the Unity is forcing its developers to reverse engineer with sample. (or without a latest manual) Therefore, Unity is necessary to release even simpler examples for the primer to have easier access. For example, a simple 'For' loop in OOP into Pure ECS. How would you explain if the primer was blocked here? If you give them a link to the sample, do you think it'll work out? The answer is NO. Some people are solving it, but on the contrary, many people are starting to give up and others who confused. This is the current situation. ECS and JobSystem announcements are already more than two years old. However, the reality is that it is difficult for developers to using it.