To everyone talking about how the human brain is the most complex object in the Universe: Stop that. It’s not. An equivalent amount of completely random molecular combinations is far more complex. The most complex mathematically possible thing is an infinitely long string of random bits. The most complex arrangement of matter is hot gas. Raw complexity doesn’t do very much.

Belief update: I’m starting to think that the “complexity” in question might actually be [closer to] complexity-compressible-by-observer, à la Schmidhuber. In this revised version the original claim might still be an overstatement but at least it makes actual technical sense (and the new hypothesis seems to justify and uplift to precision my initial one, namely that the sentence actually translates to “brains are very impressive”).