[philips]

The difference is that I know the sum ahead of time and can object in the moment at the bank.

A vote recount and/or judicially called audit can take months to resolve. This can lead to a loss in confidence in the outcome and for political shenanigans (e.g. Bush v. Gore).

I feel far more confident in a system where the software is open source because it increases trust for free. As a citizen having the software be open source is only upside to me.