The assimilation of something is in a way its complete destruction; although it is turned into something its name is different and it is not the same thing any more. Then there is the action of forgetting. Sometimes a person forgets something, but he has stored it in his subconscious mind. He says, "I have forgotten it", but when he tries to remember, one day it springs up in his memory; and this shows that it was not assimilated though it was forgotten. This is a light form of assimilating; real assimilating is forgetting a thing altogether. It is not as easy as one might think. We say very easily, "Forget it", but really to forget something is very difficult, especially something we want to forget.