In Singapore, rent in buildings known to have "bad feng shui" are measurably cheaper than in buildings with "good feng shui". So even though the belief itself

In Singapore, rent in buildings known to have "bad feng shui" are measurably cheaper than in buildings with "good feng shui". So even though the belief itself may be irrational, if you're a property developer or a banker catering to clients who do believe, it's still rational to invest in a geomancer.