Constraints

Freedom to work in the most logical and efficient way possible is the very opposite of gameplay.

Take golf.  The goal of golf is to land a ball in a cup in the ground.  The most logical and efficient way to achieve this goal is to pick up and carry the ball to the cup.  This isn't golf.  This isn't fun.  Golf is formed from the goal by adding constraints.  Constraints such as: A player may only move the ball by striking the ball with a club.  Add: A player's club swings for each hole will be counted and a handful of other constraints, and you end up with something that resembles golf as we know it.  Constraints, or rules, are integral to games.  I cannot think of a single game where the most efficient way to accomplish the goal is the recommended way.

Cheers,

Danny