Vastu Shastra Science or Superstition?

It was written in Grantha’s like Mansar Mayamatam, Mansar, Vishwakarama Prakash, Samrangan Sutradhar, Vastu Ratnavali, Sthapatya Veda etc We normally see its use in slolka’s also though there is not a separate study but it is used in all sloka’s
Normally earlier day’s people use to build the villages and religious places on bases of Vastu.