No, we can't call Lego instructions "software design" because they're simply not comparable to software in any meaningful sense. They're nothing more than step-

No, we can't call Lego instructions "software design" because they're simply not comparable to software in any meaningful sense. They're nothing more than step-by-step instructions on how to assemble a fixed set of pieces. There's no varying input or output, no calculations being done. They're the same as the instructions to assemble a bookshelf, just with more pieces and steps.