Do you believe in love at first sight? Approximately 60% of Americans do. And over 50% say they have experienced it. Now what does a person really see at first sight? The answer can be found in the process whereby the vast majority of Americans screen for potential partners. It is a 2-step screening process. In Step 1, there is a scan of the environment and all people deemed as unsuitable are quickly checked out and summarily passed over. Obviously, a very important screening criterion in our culture is physical attractiveness. So during this first step, the unattractive are deemed unsuitable and are coolly (coldly?) eliminated from further consideration. They essentially become invisible. Step 2. Those in the environment who have not been eliminated in Step 1 are now scanned more carefully. The most suitable --- those judged most attractive --- are then selected for further attention and possible selection.