Left you go. You are instantly greeted by a pair dopey-faced twins.  They are all too happy to talk to you, one finishing the other's sentences.  They inform you of the current activities.  Presently you may attend a tea party or the queen's croquet game.  Which one do you want to attend?

Tea Party  or Croquet Game

 
Principle 4 states that the participant should be introduced to many interesting characters.  These characters should provide plenty interactive opportunities  for more than one visit.  Maybe next time, you will choose to go left instead of right.  You'll meet someone else rather than these two.