The downvotes may be from people wanting to help the uninformed/hobbyists avoid wasting time trying to do something that's unrealistic - http://advances.science

The downvotes may be from people wanting to help the uninformed/hobbyists avoid wasting time trying to do something that's unrealistic - http://advances.sciencemag.org/content/3/9/e1701758 http://advances.sciencemag.org/content/3/9/e1701758. (I upvoted because the unrigorous idea of some sort of "foam automata" is cool, even if a formal, universal version of it is impossible.)