It’s a mistake to consider other people as something other than autonomous agents in their own lives - it’s popular to conceive of other people as somehow not making decisions; frequently this indicates they’re making decisions by different criteria and using different information than you. This is what I mean about perspectives you don’t have access to - I won’t say there aren’t people who fundamentally are not making real decisions in their lives, but that’s fairly rare, and if someone’s making choices that don’t make sense to you, there’s often a reason you don’t see. Again, you may make different choices than them, but actually truly understanding why they make the choices that they do - to the degree that you can understand and describe to someone else their worldview, constraints, and goals - improves your understanding of the world and your ability to accurately model, predict, and explain it.