text: When working on projects, its easier to work with something you're familiar with than anything else. Making a project on a familiar concept means students would be able to write more in-depth about it. They'd also be able to understand it better since looking something up doesn't always give you enough info about a subject. Imagine trying to write a in-depth analysis on Didgeridoos when you've never even heard of one or even have background information on instruments. Familiarity with your work makes it come to you naturally and having the freedom to choose the subject of a project is important.