To anyone who had actually programmed for a living, yes computers can do just about anything but walk on water. For our systems here in PA they design the ballot and the scanner/counter matches the design. the ballot changes after every election twice a year, obviously. Best practices and auditing can handle any of these issues, but in many cases are not performed at the election commission or DOS levels. And again the fraud is not by the big bad scanner counting machine but a person a programmer. software compiled hash codes can verify if all software matches. and it should. again. people can commit fraud all along the way. with out audits and best practices you can’t stop them. And Bookvar and the people at DOS in PA resisted the mandatory audit of the SURE systems which clearly outlined problems with the people updated the voter roles. The audit proved that the DOS is incapable of carrying out an election.
In PA I can believe it. The home of the Liberty Bell hasn't evidenced 'liberty' for a long time; for some reason many of the citizens don't want it. OTOH, the DOS is expert at carrying out a selection.