Voting machines use technology right up there with the wooden clothespin.
Voting machines on the other hand are, in many counties, antique systems that rely on a whole chain of humans where each must do their given job flawlessly. A designer, perhaps a graduate of the Marquise de Sade school of ballot layout, must list the candidates and provide an unambiguous location for a hole to be punched through the cardboard ballot. Ballot designs must have enough space to list the candidates and issues or the crowded card will produce the same result as TV and VCR remote control units. Too many choices, too few clear, logical and intuitive instructions to get it to work. If you are clear headed, unrushed, and familiar with logic then you probably can program your VCR, but not without a few mistakes.