You may feel that you are master of your body, telling it what do do and when to do it. Of course, this mastery presupposes an intimate knowledge of your body, but are you as familiar with it as you think you are? The eighteenth century philosopher David Hume argued that our knowledge of our bodies is acquired, like everything else, from experience; it is not something known innately or purely through reason.One of Hume's most interesting insights...
