Why do blind people say that it is not good to maintain the world with five ideas and six ideas?

I don't mean to distinguish between the blind six hexagrams and the traditional six hexagrams. My position on the traditional six hexagrams is the study school. There are many theories, which are difficult to be well integrated in actual combat, or many truths can't be understood in detail, while the blind six hexagrams system inherits the traditional primitive life and death, without the traditional methods, the analysis of good or bad luck in years and years, and the pattern. The more complicated the analysis is, the farther away it is from the topic. A hexagram doesn't need so much restraint, and the trend of good and bad will be worn at first sight. This is inextricably linked with the traditional Ziping eight characters and the blind eight characters, but it has a very profound difference, but the essential difference I understand is that the understanding of the "image" in Zhouyi prediction is very different. In the traditional six hexagrams, special attention is paid to prosperity and decline and combination. However, it can't be a good way to transform divinatory symbols, hexagrams, hexagrams and hexagrams between hexagrams and hexagrams into images. However, the six hexagrams and eight characters of the blind school directly bypass this step, or combine light prosperity and decline, and skillfully look at the prediction from the perspective of "images". Many cases are amazing.