Ignorance is bliss. Sometimes in CoC your character needs to pass a skill test, Biology, Astronomy, maybe History, and only if the roll is successful does your character make a Sanity check. Sometimes in CoC it pays to be ignorant. When William Shatner went into orbit, he was he became profoundly depressed by the realization humans were so small. Hell, being near the ocean still leaves me in awe though it doesn't leave me depressed. It's one thing to know you're insignificant, but it's quite another thing to have your insignificance rubbed in your face.