> Pepper et al’s paper on Somatic Evolution [...] : how can multicellular life evolve in the presence of Darwinian processes that should, by rights, turn every individual cell against its neighbors in a competition for resources? Why isn’t every somatic cell in it for themselves, why doesn’t all multicellular life devolve into cancer?

> Planarians ... [a]re not exactly worms. They’re not even individuals. What they are is habitats: cellular substrates containing individuals. Individuals who may not even like each other very much