Because the way people responds is really different depending on the way we convey a certain information, which make it important to <span> understand the purposes, audience, and context for a message before we even made the script.
For example, if the intended audience is children in their elementary school, we need to make the words and intonation seems friendly and interractive. If the intended audiences are group of professionals, it would be better if the words and intonation made into serious and to the point</span>
In economics, the term marginal<span> is used to indicate the change in some benefit or cost. when an additional unit is produced. For instance, the </span>marginal revenue<span> is the change in. total </span>revenue<span> when an additional unit is produced.</span>
