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Oct 24, 2016 at 7:25 vote accept Pratik Bhattacharya
Oct 23, 2016 at 22:57 comment added Arseni Mourzenko @Tymski: well, there was an interesting discussion during one of FogCreek's podcasts about that, when they specifically blamed the tree structure of forums, but I can't find the podcast. In general, when it comes to discussions (and not Q&A, which is inherently different), a tree can in every case be replaced by a list with the ability to quote previous messages in order to keep the track of who you're answering to. For instance, StackExchange's chat follows this pattern (and a chat is a discussion, unlike a Q&A page), making it possible to quote previous comments.
Oct 23, 2016 at 22:24 comment added tmaj Good point. However, Facebook, The Guardian and many more UX conscious sites allow answers to comments. They enforce limited depth, but it's still a tree. I often find the flat structure of comments on StackExchange, combined with hiding some comments, unhelpful and limiting.
Oct 23, 2016 at 22:14 comment added Arseni Mourzenko @Tymski: That's not an opinion, but the mainstream opinion in UX community and the opinion of many authors, including the father of interaction design. See for example About Face 3 by Alan Cooper, Tree controls, p. 457 “Unfortunately, hierarchical trees are one of the most inappropriately used controls in the toolbox. They can be highly problematic for users [...]” So no, avoiding using a structure which would be inappropriate anyway in OP's case, I'm not really prematurely optimizing design.
Oct 23, 2016 at 21:49 comment added tmaj "Flat structure of StackExchange, by opposition to old tree-oriented bulletin boards, is a good illustration of replacing an unusable approach by a very effective one." - that's an opinion only. You're prematurely optimising the design.
Oct 23, 2016 at 20:31 history answered Arseni Mourzenko CC BY-SA 3.0