The question What are some fundamental issues computer science tries to address? was closed as I was finishing the editing of an answer, that did take some time.
I think it is a rather nice question, as it is questionning the nature and role of CS, and asks for some examples. It is always time to stop the flow when there are too many examples, too many answers. But in that case there were few answers.
I asked for reopening as I disagreed with the closure, though I do not see what I should edit in the question. I like the question because I think it is important to show that CS, like other fields, is involved in fundamental problems about the world, why it is what it is, and to make it clear that it is more than a collection of technical recipes, as some people would have it. While technical answers can often be found on the web, I believe that such questions, important for laypeople and for the image of our field are less addressed, especially by technicians of the field. This is an important and critical issue for the acceptance of CS on the same level as other sciences, by the public, by other scientists of more established fields, and by political decision makers, especially regarding CS teaching in schools.
I would like to see teenagers magazine make small articles on those issues, as they do on other scientific topics. Make the young people dream. An no one will ever dream over a binary tree, even a balanced one.
To compare with another field, very very few phisicists will ever study consmology. Nevertheless, that is one topic that may make teenagers dream an do sciences. That is what the question was about. At least it should be taken as an opportunity to answer along those lines.
That is what I was trying to do. Whether I was doing it well is another matter.
Now, if you think it would help the question to modify it along those lines, I can try that. But some will say I am calling for a list of topic. That is not the case ... ther are not so many topics that can be fundamental and explainable to laypeople.
P.S. Gilles told me I should take the issue here on meta, even apparently for disagreement over one specific question. So I am doing it. I never realized it was something done, and I also raised the more general question of question closing while an answer is edited, as I was uncomfortable talking only of one specific problem. Apparently I was wrong. Sorry for that.