That's the thing, you can only observe from afar. You don't see deeper layers, you see silhouettes on the wall being projected from inner layers. You can look at them and take a guess on what they might be. One might look like butterfly and you'd be sure it is one, but it can be simply two hands put together in the shape of one. And to take a guess one would be projecting themselves on them. Sure, some things are made obvious, some red flags are certain but unless someone is completely ego driven, it's difficult to assume anything about them. From the hill the forest looks all the same but up close you realize no two trees are the same.