According to Chapter 4, what specific signs of societal decay indicate that it's time for a saint to incarnate?

Chapter 4 lists several specific signs of a decaying society that call for a saint's incarnation. These conditions include when Brahmins despise their own caste duties and Shudras try to become Brahmins, when religious teachers are insulted, and when people in every house consider themselves scholars without true knowledge. The chapter also mentions a decline in moral conduct, such as Brahmins openly consuming liquor and meat. Furthermore, it points to a time when sectarian hatred grows, and even dedicated practitioners like Yogis and ritualists grow tired of their spiritual practices, signaling a deep-seated spiritual crisis that a saint comes to resolve.