From this perspective life itself could be seen as a form of cancer though, imho it has to have a deleterious component to deserve that analogy. This has been

From this perspective life itself could be seen as a form of cancer though, imho it has to have a deleterious component to deserve that analogy. This has been considered with the concept of gray goo. Self replicating nano machines that eat the environment. https://en.wikipedia.org/wiki/Gray_goo https://en.wikipedia.org/wiki/Gray_goo