Another nice example is the <intuitive> steering wheel of a car. If you know cars, you will see: Hey. I need to turn the wheel to the left, so the front wheels

Another nice example is the <intuitive> steering wheel of a car. If you know cars, you will see: Hey. I need to turn the wheel to the left, so the front wheels of the car turn towards the left, so the entire car begins to turn to the left. If you are a sailor, however, who only knows simple hand-steered rudders, your intuition is the opposite, because in order to steer your ship to the right, you need to turn the rudder to the left in order to get the right currents flowing. These problems are _really_ interesting, and _really_ hard to solve. (whereas I think, the first results from the second). :)