But it need not right? You could easily weave 6 strands in different paths through all the rods and do calculations to be sure that any two could fail and the

But it need not right? You could easily weave 6 strands in different paths through all the rods and do calculations to be sure that any two could fail and the building still stand. Sure you now need to tighten 6 cables with a winch rather than 1 to assemble your building, but it still seems like it would be far quicker than traditional frame construction.