His video shows the raindrops initially, then going into simple cellular forms and then showing the important idea of cooperation between simple cells to form more robust colonies of life. This develops into a visualisation of the idea of endosymbiosis, where simpler smaller organisms can live inside larger cells, each providing a benefit to the other, and eventually forming parts of the same organism as they evolve to be entirely dependent on each other. The video also shows competition between organisms for resources, which spurs on their evolutionary development, as each species tries to keep up with the innovations of the others. He also visualises the emergent ideas of flocking behaviour, where groups of individuals form beautiful dancing-like patterns.
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