What can I say….it is a drawing program. It does keep getting better, and you can tell Google is actively working on this product as it continues to improve. So the only way to keep up with the changes is to keep playing with it and see what it can and cannot do. These types of programs are regularly seen in elementary education (and sometimes in secondary) when teachers want students to create mind maps and organize thoughts. Take some time to try it out.
Go make something!