*An IP editor tagged the Bullet sub-section for a citation.  This is already given in the Causes section as Littlewood (1953).  I propose just adding the footnote and clear the tag.    

 *In the Bathtub section, we have the parenthetical phrase once per day at the poles, once every 2 days at 30 degrees of latitude.  I was just in Miami, I rotated once per day.  I propose just deleting the whole phrase as not relevant to the statement.