Actually few aspects of vasthu resemble the factors we consider in design.
For ex, as per vasthu the entrance of a house should face east or north. According to the climate studies are aware of that east and north have good lighting which almost have lesser glare compared to the light in the south and west directions.
This is just 1 example; I personally believe that every science that has originated in India has scientific roots. But in order to make people do it, certain techniques were followed. One such technic in construction field is vasthu. If you dig deep enough you can find scientific reasons for everything that is done.