You describe N-version programming (though not by name). In actuality two different from-scratch implementations are likely to re-make the same mistakes, see t

You describe N-version programming (though not by name). In actuality two different from-scratch implementations are likely to re-make the same mistakes, see the following. http://scholar.google.com/scholar?q=An+Experimental+Evaluation+of+the+Assumption+of+Independence+in+Multi+Version+Programming http://scholar.google.com/scholar?q=An+Experimental+Evaluati...