Take a step backward and realize what this is. Life seems so concrete, so natural. However, it only exists in our minds. All of this, the colors, the shapes, the way it functions, would it all exist if we weren't here witnessing it? Does the sunset look like that unless we like it like that? Do trees grow just because, or are they growing for us? Do we imagine this? The only thing we can know for sure is that we are articulated faces floating through space. Our perceptions and brains decide everything else for us.