The answer is not spontaneous if the recipients of the written communication are separated by distance and need to clear their doubts. Written communication takes longer since response is not quick in this scenario. Message encoding and transmission require time. When you write a letter you create a record that can be read or seen by others. This means that other people can know what you think about them and themselves. You cannot escape this kind of self-awareness when you use letters to communicate with others. Spontaneity requires the freedom to act without delay or restraint, which written messages cannot offer. If you want to reply quickly to a written message, you must first finish writing it and then send it. This means that the person who sent the message will not know your immediate reaction. He or she will only know what you said later - after the fact! Spontaneous replies require instant reactions without thinking through what you say. This type of communication cannot happen over email or text messaging because they are not real-time methods of communication. Written messages can tell others about your feelings more effectively than speech alone. This is because words have meaning and can convey ideas that cannot be expressed in actions alone. For example, you can say "I love you" with your eyes, but not everyone will understand this as well you might hope.