Tolerance and insensitivity seem to be two sides of the same coin. A tolerant person chooses to remain unruffled, despite the environment. An insensitive person isn't even aware of the chaos or irritants in that same environment. The insensitive person exposes his flaw by "instructing"others to be tolerant like himself, and the immediately goes out to propogate the same irritants and chaos.

You can eventually lose your hearing by continual exposure to loud music. After that, you wonder why everyone else is whispering, while you are the only one who makes any sense. Duh...!