Central Ideas that we are finding in the literature is always supported by the key details. Central ideas in the literature is referring to the main idea of the story that is created by the author.
When readers put those details together, they are getting that central idea of the text. Central or main idea is often avoiding character names or some highlighted truth in the story. This idea is also helping the readers to find what the author tried to show with his work.
The benefits are that Aaron will be more productive, which will lead to more output, as well as increased human capital as a result of his videos. The costs to Aaron are the time and money to take the course, along with any forgone income that could have been earned during this time.