In the opening titles of the Westworld TV series, we see various things being constructed using some sort of white "thread".
This is mostly people (hosts) and animals, but it also looks like a piano is being built this way.
Does this mean that all the buildings, clothes, weapons and everything else is made of this material? If so, why? Surely it would have been a lot less trouble to put a real piano in the saloon, or to build a house using real wood, for instance?