It is the learning system adopted by Feng Shui masters in the past that suffocates the Feng Shui knowledge.
If Feng Shui knowledge was passed on to the first Feng Shui master by an alien who was much more advanced than human civilization, then such knowledge can be considered secrets. When it is passed down the generations, it becomes practically zero after 50 generations due to the inevitable loss between generations.
If Feng Shui knowledge is human invention, then there should be no secret. It cannot be the invention of one person. It is the joint effort of many intelligent human beings. It is no different than the way any other science subject is developed. It is only in this way, Feng Shui education has a future.
The most glorious academic era in China was the Spring-Autumn and Warring-States Era 春秋戰國時代 described as hundred flowers blossoming with hundred schools honking 百花齊放 百家爭鳴. Although Confucianism and Daoism emerge as outstanding schools, the others all have their respected historical position.
Feng Shui should be the same had it not been suffocated by some selfish masters in the past. Qing Feng Shui scholar Shen Zhu Reng 沈竹礽 said these masters were honorable contributors to Feng Shui but at the same time convicts of Feng Shui.