Just nitpicking about "extremely unlikely for them both to report the same wrong answer for the same stimulus". This assumption is what are "blind implementati

Just nitpicking about "extremely unlikely for them both to report the same wrong answer for the same stimulus". This assumption is what are "blind implementation voting systems" were based on, and it was proved to not survive that well in practice. It may totally work in your case, but you may be interested in looking at the work on Nancy Leveson at the MIT (all links are from her website) http://sunnyday.mit.edu/papers/nver-tse.pdf http://sunnyday.mit.edu/papers/nver-tse.pdf http://sunnyday.mit.edu/critics.pdf http://sunnyday.mit.edu/critics.pdf http://sunnyday.mit.edu/papers/nver2.pdf http://sunnyday.mit.edu/papers/nver2.pdf http://sunnyday.mit.edu/papers/consistent-comp.pdf http://sunnyday.mit.edu/papers/consistent-comp.pdf This body of work launched quite a controversy, but well, it is still here...