Idealism and "group solipsism" (why solipsim could still be the case even if there are other minds)
It's like two people playing chess against one-another, but are on other sides of the planet. There's two chess sets which corresponds to each other, so if the white knight is moved on one board, it automatically moves on the other. Each person is alone in their own room, with their own chess board, but they are playing against each other in a singular match. So for example, one guy is playing as black. He'd see on the board in front of him, a white piece moving by itself, corresponding to the guy on the other side of the world moving that white piece with his hand.
Your face and body is much like this as well, when you are in public. You control it's movements, but it's appearing in the visual fields of other people. So you're in a store for example. You are intensely aware/self-conscious of the movements and expressions in your face, and of your arms when you point to a product for the store person. It's like you are basically existing in their visual field. You're kind of transported into their mind (their visual perception) and with your movements in your body and your facial expression you control what they perceive. You walk around and make expressions directly within their minds.
It's very odd to me. It's as if your body is basically an exterior, a shell or a surface, and it moves in and out of people's minds, and it's totally up to you what you express or do with that exterior, how you present it. There's a huge difference in how you experience your body compared to being in the presence of other people and being alone. When other people are around my perception of my body and face drastically switches so that I am immediately aware of myself as another persons perception - I have entered the mind of another person. And so I experience the surface of my body and my face as a visual perception for another person. I experience myself, in my mind, from a third person visual perspective. Imagining myself as existing within the visual perception of another person, and he does the same for me. We essentially lose our first person perspective that we have while alone, and see ourselves as the exterior/shell of our bodies which others are perceiving.
The world is so totally incomprehensibly bizarre! I seriously have no idea wtf is going on. I still have a lot of doubts about/towards solipsism. It seems no matter how secure I feel about myself actually communicating with others, these niggling little doubts always sneak back in, "are you really? is there truly another visual field which my body is being perceived within? Is there really a perceivier somehow associated with that persons body I see? Is there really a pain experience associated with that person hurting themselves?"
I suppose us being separate beings means we really just cannot know for sure whether the other actually exists. Which troubles me greatly. Whether you exist or not has huge consequences for morality, love, meaning, etc.