The post argues that handâdrawn diagramsâmade with simple paper and pencil or even thicker drawing paper and dualâtipped markersâare an indispensable tool for programmers, allowing quick mapping of complex systems, easier debugging, and smoother flow control; the author claims that visual programming languages can eliminate much of the coding step, turning functions like combineLatest into a single checkbox, while also simplifying functional reactive programming by making signal dependencies visible and easier to manage.






















