Willful Ignorance.

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Arguably the most deadly sin, willful ignorance means to deny any facts and statistics that does not follow your narrative. To be willfully ignorant would mean to puncture a hole in the ship in which has been sailed for thousands of years. It would mean to smoke in the middle of a busy gas station, and it would mean farting in an elevator. Willful ignorance is an absolute disgrace not only to your peers, but to the collective library of human knowledge built over a millennia. And every time you deny a fact, or refuse to read an article for the sake of learning, you make the thousands of people who died in the dark ages weep.