If you, as a communicator, are careless, indifferent, unskillful, or just plain lazy, you will usually fail in communication. Even following careful preparation, a flurry of unrelated realities may create static which interferes with the easy flow of data. Key people sometimes die in mid-sentence. Sound systems collapse. Printing deadlines are missed.
Unexpected storms arrive.
Checks are delayed in the mail. Receivers may think they understand your message. In reality, they often misunderstand it or just want to humor you or do not want to admit misunderstanding. To be content with the state of your own communication usually means that you designed the communication process according to your own taste and did not consider the receiver. The message should be designed for the receiver, not for the sender.