I always marvel at engineering. Like when you think of your iPhone, hoe did they figure out a way to design it so it looks cool and do all it can and make millions of then. Or step inside a nuclear submarine and think about all the wire and pipes and how they figured out where it all went and worked together. Amazing stuff. Look at this picture of hot rod engine. Just beautiful in looks and how it functions too. To think someone drew the idea out on paper originally .