We've all heard the saying about the optimist seeing the glass as half full and the pessimist seeing the glass half empty. It seems like an easy way to throw everyone in to two groups and in my humble opinion it is a great way to separate the two. One is correct and one is incorrect. Before I tell you which group is correct, I ask that you picture yourself in a restaurant. This restaurant asks you if you are an optimist or a pessimist when you entered and put an "O" or a "P" on your forehead so they would remember. You order your food and a fine bottle of Cabernet Sauvignon. The wine nicely compliments your meal and you both are enjoying it. The waiter walks by and sees that both of your glasses appear to have half the amount originally poured. He lifts the bottle from the table and pours it into the glass of the person with the "P" on their head and returns the bottle to the table. He walks off to tend to another table. The point is, in his opinion th...