When speaking with family or friends, we often feel most comfortable using informal, familiar language. For instance, if a friend were to ask you, "Where are you going?", you probably would not answer, "I am going to the beach." In casual conversation, we often use sentence fragments and contractions to save time. During a conversation, we are also unable to stop what we are doing to look up facts and statistics, so we might use imprecise words such as "a lot," "okay," and "et cetera." We may find ourselves using slang, colloquialisms, and vague or unclear words when talking with our friends and family, but formal writing requires precise, unambiguous language.