Summary

Human bodies look different than jellyfish because what makes us different is what’s locked in our cells. A mass of bacteria or a group of skin cells is not a clump of cells. The component parts of cells work together to make the whole. Just as our bodies divide functions between different parts or organs, this division of labor extends to the microscopic parts like cells, genes and proteins. Skin cells continuously die and flake off but the individual remains the same. When a group of cells become a tumor when they stop cooperating with the other cells. They destroy the balance that’s necessary to maintain life. The communication between cells and their ability to make molecules comprises the “tool kit” that’s necessary to build all of Earth’s forms of life.

The vast majority of the life that has...