Things Engineers Like: Complex Diagrams

Any engineer can read schematics and diagrams. And any electrical engineer understands every single component in the one above. My personal favorites include the 5 Ohm decoy, the 1 Ohm cluster of resistors (Oh, so you think you're such a whiz at EE 201), and oh course the 120 Ohm resistor or to taste.
One of my favorite blogs: No Instructions Included by a good friend, Jordan Stauffer (A blog post reviewing his blog will be posted soon (He better step up his game) posted a great diagram of a common household item, a toilet:

There is something to being able to understand something that most others cannot. I like to pride in it.
More to come... Too busy...