text: One notable article by Samuel Butler was titled for this thinker “
full_question: One notable article by Samuel Butler was titled for this thinker “Among the Machines,” one of the earliest works to suggest self-replicating machines could be possible. In one work, this thinker was accused of causing slavery in Africa and was advised that he may need a “rawest berry” to treat a burn. This thinker wrote the books It Was Snowing Butterflies, The Expression of Emotion in Man and Animals, and The Descent of Man. In one work, this thinker was asked by Professor Oak if he was a boy or a girl while being played by “Froggy.” For ten points, name this thinker who did a Youtube based rap battle some time after formulating the theory of evolution.
first_sentence: One notable article by Samuel Butler was titled for this thinker “