As far as my views and beliefs of the world, let’s start with that proverbial glass of water. Most people like to look at a glass of water from the side. It limits you to only two perceptions; half full or half empty. If you look at it from the top, it’s likely a round circle with the surface of the water visible. If the water is clear, you’ll see a diffracted bottom. You can tell water is there, but actual level is debatable. It may even appear full. If you look at it from the bottom looking up, you may not see very far at all, vision will be hindered by the bottom.
It’s a matter of perspective. That glass is full as far as I’m concerned.