[TangoTrotFox]

I think that's setting a very unreasonable standard as the exact same could be said of election workers in e.g. a paper balloting system. Votes get miscounted, votes go missing, a new box of 'votes' is added into the mix, etc.

Electronic systems can provide a much better level of security than this through not only all the regular security techniques you'd apply to regular workers (no individual access, surveillance, etc) but also a wide array of electronic means including logging, 'ballot' validation, and much more. And you can also burn everything including the operating system and election software onto a non-flashable ROM meaning software modifications become all but impossible, and even if somehow achieved, would be trivial to detect.