I watched a talk given by Christoph Adami about searching for alien life. The problem is that we don't know how to find alien life, since it is nothing like the life that we know. Adami explained how using self-replicating computer programs to research artificial life can help us to find life signatures called "biomarkers." These are completely free of our human preconceptions of what life actually is. Using these programs may make it easier to detect extraterrestrial life by searching without a biased point of view about what life should be.
Mason Augustus Wheeler
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