20240909

 Played FC until midnight and then started to work on rewriting. Watched a football game around 3 and then played piano for a while. After having breakfast, rested for a while and then worked again. Decided to stay here for another year and extended current contract before noon. Tried to sleep after lunch but failed. Completed 13 pomodoroes today - 2 for learning and 11 for work. Watched dynamic land's video yesterday, just the book part. As I see, there must be a computer which holds photos of all the books in the library, so it can be displayed on the wall. And the laser part, is a way to generate a signal to ask the computer to show the pointed book. I'm not very interested in the way he interacted with the system currently, I think no matter how, use laser or finger, scan the books'code or read out the book's name, or use something like AirTag, ultimately he should use some device to generate a signal to tell the system which book he wanted to exhibit. This is how computing devices work. How does it relate to me? The system I'm working on is all about signals, although I don't use that word in my project. The picture is pretty clear, there are three major functionalities: 1. create any signals directly, and save them not only for reusing, but also for providing a context for signal processing. 2. provide a way to use signals to communicate with devices, for example, over bluetooth. I'm not working on this currently, because I'm not ready for handling security problems of connections, and if it worked for local device api, like iOS's send message and notification api, it would work for remote devices. For various reasons, I would prohibit network access for it, so it would only work in a limited space, like one's home. 3. manipulate signals, like query from saved signals and create a signal accordingly, one can make devices work together by this way. This is actually programming, but I don't need to invent a full-fledged programming language, just a DSL for signal processing. Once there were done, one would be able to communicate with any smart devices directly, without some app (just ignoring the security problesm for now), and even not-so-smart devices. If a device can transform some signal to a mechanic action of pressing a button (without a chip?), then one can use this system to control non-smart devices like old TV. Anyway, I see this would work perfectly, but my estimates are always quite inaccurate...