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If science is evolving, then we are artificially changing the course of evolution. Even if we are errors then we have the possibility of changing that label through medicine and procedures such as stem cell research. Even if we are errors, none of us participating in this class would be able to prove that considering we would not find out for many hundreds of years to come. As we discussed in class, it is hard to define what an error in evolution is. Is it simply carrying poor genes, having downsyndrome or having a weak imune system? Or is it something not visible or detectable by humans? People in class seem to get offended by the idea that we could possibly be an error, however, I doubt the cave men who began walking on all fours thought they were errors either!