Have you looked at non-trivial simulink models? The graph of connections between logical programming elements is too high to nicely represent in a single two di

Have you looked at non-trivial simulink models? The graph of connections between logical programming elements is too high to nicely represent in a single two dimensional plane. Once you render all the required connections, the gain of a clean, easy-to-follow visual schematic for the logic is lost. There are ways to carefully clean it up and keep it logical - but once you get into all of that, you might as well have been working in text. Look at Printed Circuit Boards (PCBs) for hardware. For complex hardware logic, you often end up with multi-layer boards. The boards carry higher complexity and cost, but designers use them because two-dimensions is simply not enough for the interconnects.