Do these inventions exist? How hard to make

. A split, mechanical keyboard that I can adjust in the air (attached to the desk by a pole) so that I don't have to maintain the same typing posture everyday and have my shoulders hunched forward. i.e. I can recline in my chair and have the keyboard hover where my chest is. 2. Smart QA app. I've used Reddit, Quora, Zhihu, none of the apps have really have a good way of spam and content management, matching the questions with people who actually understand the shit and are able to answer it (instead of just posting in a topic or group). This app will learn from your question content, messages, your answer content etc using NLP and based on voter success rate will better match questions and answers. Not just questions, but also service requests, so a combination of TaskRabbit, Reddit, etc but using NLP to group people of similar knowledge together.