Also see Keith Devlin's essay: In math you have to remember, in other subjects you can think about it at http://www.maa.org/external_archive/devlin/devlin_06_10

Also see Keith Devlin's essay: In math you have to remember, in other subjects you can think about it at http://www.maa.org/external_archive/devlin/devlin_06_10.html http://www.maa.org/external_archive/devlin/devlin_06_10.html