One of the runners-up in the "general synthetic lifeform" category of our Mad Science Contest was Rizgar Mella, who wrote a paper discussing the possibility of software-controlled organisms. Mella studies theoretical physics at the Royal Holloway University of London. Here is Mella's paper.
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Very interesting, but was it checked for grammar, spelling, and punctuation? There are so many errors and run-on sentences that it's difficult to read.