(Seriously.. No poker content at all.)
The human body is unquestionably the most complicated machine that any person has ever encountered, and it’s likely to hold that title. Each of the about 6.8 billion people on Earth is composed of a unique set of roughly 100 trillion cells (Whenever you hear the word trillion, be amazed) of a huge variety of types. Each of these cells is way more complicated and elegant than your high school bio textbook said. The organelles in your cell exist in this terrifyingly confusing and surreal world in which incredibly weird objects of a huge variety of scales interact according to the bizarre laws of organic chemistry, three-dimensional geometry, and quantum mechanics. This is explained way better than I ever could by this insanely awesome video created for Harvard students: