An old adage warns: If you don't know your history, you will be forever condemned to repeat it. Likewise, if you don't know your science fiction, and heed its warnings, you could condemn the Earth to future catastrophe.
Last year I built a Courage Machine, but I thought it might be noisy and was too afraid to turn it on. So I coated it with glue, covered it with cat hair, mounted it on my wall, and started claiming it was an exotic animal I killed on a Safari in Africa. I'd like to believe people believe me, on account of it being so strange that it has to be true.
I climbed aboard a Greyhound bus and rode it to New York without telling anyone, without so much as a goodbye. What was I thinking? I wasn't. I was young and stupid and broken. I knew from watching movies that broken people hopped on buses and disappeared. New York seemed far away, geographically, mentally.
But she forgot nothing, and he sometimes forgot much too quickly, and, often that same day, encouraged by her composure, would laugh and frolic over the champagne, if friends stopped by. What venom must have been in her eyes at those moments yet he noticed nothing!