One important lesson of (nearly) every #AdventOfCode puzzle: It's not as simple as it looks at the beginning.

It's a lesson to be remembered for work…: Most people underestimate the effort, even when they take this into account. See #HofstadtersLaw ➙ https://en.wikipedia.org/wiki/Hofstadter%27s_law

#GödelEscherBach #Hofstadter