Well, please continue taking that line of logic to it's obvious conclusion, that we're all just souls living in Plato's cave, and we cannot know anything about

Well, please continue taking that line of logic to it's obvious conclusion, that we're all just souls living in Plato's cave, and we cannot know anything about other people, they may mot even exist. So why do anything at all? I'm sorry, I need to step outside of your philosophical bubble, and go do things in the real world. Rest assured that I will continue to make assumptions about the mental state of other beings, for it is the way that modern civilization operates.