The attached photo has 2 identical dolphins in it. It was used in a case study on stress levels with patients at St. Joseph Hospital. Look at both dolphins jumping out of the water. The dolphins are identical. A closely monitored, scientific study revealed that in spite of the fact that the dolphins are identical, a person under stress will find differences in the two dolphins. If there are many differences found between the dolphins, it means that the person is experiencing significant amount of stress. Look at the photograph. If you find more than one or two differences you may want to take a vacation.