In all honesty, I entered Psychology 1001 reluctantly, because I had to and not expecting to encounter any particularly influential ideas. However, I was surprised when learning about psychology changed my worldview in a number of ways. The most significant of these was my concept of morality. A short time ago I believed humans' moral instincts were perhaps divinely inspired, or at least of more significance than simple science. However, psychology reveals that morality is in fact perfectly explainable with evolutionary theory. They are created in people when they associate actions perceived as immoral with punishment; later immorality is associated with fear and, later still, immorality is a negative stimulus all by itself. This revelation has a vast number of implications. For example, if one were a perfectly logical person, one could arguably use this information to commit any immoral act without reservation. I don't think I could ever be such a cold person, since my morals are too deeply ingrained in me and to break them would cause me too much psychological pain for it to be worth it. However, after this new knowledge I will be sure not to judge too harshly people I consider to be immoral, because it's not necessarily their fault, but the fault of the environment in which they grew up. In any case, there is no way I will forget this information in five years, or ever.