We also discussed that if you have two theories that lead to a fact you should choose the simpler fact. I think that you should choose the more sensible theory though. The simpler one may be easier to understand but i feel like the more sensible theory, even if more complicated, would be a better option, but this is just my personal opinion.
It is only experience that allows us to know things and infer things was also a topic brought up in lecture and I feel like I completely agree. Without the experiences in our lives we cannot even imagine things to theorize about. Without experiences we are not going to be open to other ways of life or possibilities of pretty much anything unless we can see with our own eyes how it works for other people or how it could work in other situations.