"...once told young economists that a good place to have ideas was in front of the shaving mirror. Krugman has a beard. Imagine, quipped Dixit, how much he could have achieved if he shaved!..".My good place to think about good ideas is under the shower's overhead nozzle. And you will know that you lead toward right direction for your ideas when you start to use shampoo to wash your body without even realize it.