This reminds me of my reaction to Creationism.

The "young earth" version of Creationism posits that all the evidence for the epochs, geologic and fossil, for example, was planted there in 4004BCE by an invisible man in the sky for some unknowable reason. Perhaps it's for His amusement to watch us stumble around stupidly thinking the planet is 4.5 billion years old based on the "fake" evidence he planted?

I enjoy this line of thinking, so I take it a step further. I call my version "Ultra-Young-Earth Creationism". In my theory, everything, the earth, the solar system, the galaxy, the entire observable universe was created one microsecond ago by that same Invisible Dude who gets his kicks watching me stupidly believe I was once a kid and grew up, etc.--all the things we call "reality" and "history"-- based on the memories he implanted in all of our brains at the moment he flicked the switch.

He built the Greek and Roman ruins, he built the pyramids in Egypt and Central America, he built it all as part of his enormous joke just to watch how we react.

Hey, you can't disprove my theory, so it must be true!