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TIL: The Expanse started out as an RPG. Ty Frank created the game and his later co-author Daniel Abraham was so impressed by the amount of research and world-building he suggested they write a novel from it. Their first book was nominated for a Hugo and spawned a hit television series.

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oRyN7 TIL paleobiologist Peter Vrsansky once discovered, in one single spot in Ecuador, "more than 150 cockroach species – more than those currently living in all of Europe"
OOn6 TIL: Spontaneous auto-amputation is the process by which your body apmutates its own limb without any instance of external injury. Usually occurring in the small toe, a depression develops across fold of the toe and gradually progresses until the toe falls off. The condition is usually painless.
ADdP4 TIL: conceptual and non-conceptual mental states. Conceptual is beliefs that shape your current world view. Non-conceptual state can represent the world even though the bearer of those mental states need not possess the concepts required to specify their content.
7r8GL TIL Weezer's Undone (The Sweater Song) was filmed in one shot while the band played and sang at twice normal speed. The video was then slowed by half and put to the original song to produce a dreamy effect.
d8JJ7 TIL The term "Patient Zero" was actually “Patient O” as in the letter O, meaning that the person was from “outside” California. The ambiguous circular symbol on a chart was later read as a zero and the term became widely used.