One of the most important considerations in poker is position. When you have position on your opponents, you have a distinct advantage over them. The players whom you will have position on most often are those on your right. Additionally, your positional advantage is enhanced as the stacks get deeper between you and these players.
The converse of these statements is true when you play pots with players on your left. Now, they are the ones who will most often have a positional advantage on you, and again, that advantage will increase as stacks get deeper.
Pondering this dynamic has led me to experiment with the following theory.