Single threaded just means there is no parallelization, but there can (and usually is) still concurrency, which is what reactive programming is about. I think

Single threaded just means there is no parallelization, but there can (and usually is) still concurrency, which is what reactive programming is about. I think reactive programing solves the "dependency graph" problem to you in the sense that you just have to "change" one value and then all dependencies (and their dependencies) update. You still have to define the relations though.