I think there are interesting foundations here. I can see different ways you might expand on it, but the prominent one being adding more options. As someone mentioned this is not an easy topic to work with. If you leave it linear, the experience is more about getting an insight into your own line of thinking/approach to the topic. But if you add different lines of thought (ie. approaches/views/etc.), that becomes more about how different people navigate the topic (which is a bigger challenge). Whether linear or nonlinear is fine, but then lean into it :)