Which is the problem only if you see of "building" as something that should be instantaneous or take a couple of hours tops. This is similar to replicability i

Which is the problem only if you see of "building" as something that should be instantaneous or take a couple of hours tops. This is similar to replicability in science, there's some experiments that are inmensely expensive to replicate, like LHC, but it still IS replicable technically.