Mineral skeletons evolved in the Ediacran.
Wikipedia says its sessile. It may be a filter feeder, with no neurons.
There are four reasons to have mineralisation
- Macroscopic predator prey relationships began (cambrian/aware), you need an exoskeleton to not get eaten by anomalicaris
- You want to grow tall, or defend yourself from microbes. It may be structural support. (macroscopic/corals)
- You produce it as a side effect of your metabolism (microbial mats, pyritic shales, cell stage)
- Its your cell wall (cell stage)
Cell walls are handled in the cell editor. How would it be handled in the multicellular editor? Your cell wall becomes your skeleton type? We didn’t had calcium cell walls. You need to lose your cell walls to use muscles and not be like plants. It should be added in the late macroscopic or early aware editor. They use the same editor, right? It might have been used throughout macroscopic stage. And also,
If you don’t have a skeleton, you would be squishy anyway. Worms are squishy. Snails are squishy. Ants have a chitin exoskeleton. Chitin and cellulose are made from glucose and proteins, they don’t need minerals. If microbes are squishy anyway, why remove the squishyness when there is lots of them? It should go away if (1) you have cell walls, (2) the cells in the outer part of your body aren’t squishy, because they’re skeleton or muscle.
why manually connect the different tissues? You only need to design the organs. A bigger liver is better at breaking down toxins, a bigger lung stores more air when you’re diving and provides you more oxygen when you’re running, a bigger brain makes you throw stones more accurately and allows you to have more friends at the same time. More blood vessels doesn’t make anything better. Every tissue would be connected by blood vessels and (in aware) by nerves. Placing them would be tedious and repetetive. You can place a liver for the first time. You can’t place a blood vessel for the first time. Every tissue would need to have come pre packaged with that.
Is this submerged trees or some sort of liquid tree slimes hanging from another tree?
Our ancestors had a central nervous cord going through their backs. The ancestor of octopods had a nerve cord going through their bellies. Their nerves had to start at the top, and go to the bottom, which is why, it split into two, and merged again. Octopuses have their mouths going through their brains.
Its not that they don’t want to have a central brains. But it ended up being a torus, which is why it isn’t much centralised.
Octopuses also have eyes that have nerves connected to the back of their eye cells. Our eyes have nerves connected to the front 
of the eye cells. Which block visibility. We have a blind spot where the nerve density is high when they all come together. So you can have sub optimalities because of your evolutionary history. Octopuses had one and we have another.
