The reason I put the code in there was, it's an alternative to looking at the instructions, plus this is a bonus with buying the set, not everyone could access it. Also as stated above, the models in 3d form have already been produced, at least year 2000+ ones, as the detail in the manuals has computer imagery in the print. Oh! I like also the idea of the little guys building the set, nice touch that, though animation like that would take up a lot of time to produce for each build. Instead just the model, and being able to rotate, watch step by step and zoom in & out and be able to print, would be nice change from the norm.