The most comprehensive response concerning the benefits to society and the costs for Aaron in taking the online course is:
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.
This response highlights the positive impact on both Aaron's productivity and the potential broader benefits to society from his enhanced output, while also acknowledging the various costs associated with the decision to take the course. Increased productivity can lead to better quality video essays, which may inform and educate a wider audience on economic concepts, ultimately benefiting society.