>>how is the intracellular space denser than the extracellular?

Gemini: ``` Yes, the intracellular space is denser than the extracellular space:

Here's why:

    Packing: Cells are packed with molecules like proteins, carbohydrates, and nucleic acids. These molecules take up a significant amount of space within the cell, leaving little room for just water.
    Solutes: The intracellular space contains a higher concentration of dissolved molecules (solutes) compared to the extracellular space. This contributes to a higher density.
    Extracellular Matrix: The extracellular space, on the other hand, contains a looser network of connective tissues and fluids like interstitial fluid. This allows for more space between molecules, resulting in a lower density.

```

>>Still, trying to really figure out what the 'intention' was all those billions of years ago is hard

With this logic you'll need another billion of years to randomly figure it out. I'd rather focus on how/efficiently does such position contribute to a specific current experimental methodology or results.