I think Feng Shui is like card reading. It’s only accurate if you believe in it.
So the key word here is BELIEVE. If you don’t believe or doubt it, then it’s not going to work. I feel the most accurate way to test out feng shui is to do a feng shui thingy without letting the person know that some thing has been done.
Because if YOU are the one consciously asking for it, means, that you’ve unconsciously changed your believe system.