In order to illustrate that, ‘Just as their understanding may be of two types, either mistaken or unmistaken, the same is the case with objects,’ it was explained:
Perceptions of the world that happens when
Six faculties have not been compromised
Are true within the world, the rest are all
Considered false according to the world. (6.25)
Internal conditions that impair the faculties are such things as cataracts, jaundice and so on, and ingesting datura and the like. External conditions that distort the faculties are oil, water and mirrors, sounds and so on made inside a cave and the like, and sunlight under particular conditions of location or time, and so on. These impair the faculties without being internal, causing perceptions such as reflections, echoes and mirages of water. Magical formulas, potions and so on, employed for instance by illusionists, should likewise be included within this category. What impairs the mind are these things, as well as mistaken philosophical systems and so on, and apparently sound inferences. These are explained in terms of the principles of dreams and so on. Therefore, the understanding that the world gains through the sixfold faculties, when none of the mentioned conditions impairing one’s faculties are present, is considered true from the worldly perspective, but not for a noble one. Reflections and so forth, appearing with the nature of objects when the faculties are compromised in a certain way, are mistaken from the worldly point of view.