The chaos of the scene means Dante thinks of heretics' thoughts and behavior as illogical.
Answer:
because it is something that all people should know about
because it helps people not get hurt in future
because people do bad things due to cyberbullying
Explanation:
This quote means to describe the root of the deprecation of many people to properly conduct an investigation about any subject, and that root is lack of interest. In order to do something right, one must concentrate on that subject alone, ignoring all other distractions, but that can only be achieved if the investigator feels drawn to the subject - meaning they find it interesting.
Lack of interest is what accomplishes to "keep a man in everlasting ignorance...". In the case of ignorance, the investigation might go through, but it will most likely consist of a mindlessly structured compilation of other people's research which the investigator would hardly be able to interpret.
Use long words and phrases to create a rhythm of speech