For the past week and a half, I have been listening to a lecture course on the history surrounding the theory of evolution, and it has left me contemplating how ideas, particularly ways of understanding, spread and change with the amount of information we have. Today, the concept of natural selection acting to produce changes in species over the course of generations strikes most people as logical and obvious, but Darwin spent many years working out that very logic after his famous visit to the Galapagos Islands. We, of course, have knowledge of genetics which had not yet been discovered at that time although experiments on inheritance of various traits were being conducted during Darwin's lifetime.
Many people will not understand how engaging in a true debate could be relaxing in any sense of the word, but for me, debates offer a great distraction that keep my mind in a healthy state of exercise and contemplation. I don't have time to dwell on negative thoughts or frustrations brought on by other people whom I cannot avoid or address.
Summer can be a time of nostalgia. Family vacations, festivals, days trips to local interest spots all bring back memories of our childhoods as we share favorite places and activities with our new friends and children. But nostalgia can also bring with it melancholy. Sometimes I've found this to be true for me, and over the years, I've learned to identify certain things that, even though I love them, I know will drop me into a period of depression.