I see stories about how election is rigged or that there are security vulnerabilities and lots of people don’t believe the outcome. Why don’t they just open source everything so that anyone can look at the code and be sure the votes are tallied correctly?
Both open and closed source software share this problem, so this doesn’t really answer the question.
I meant to say that open sourcing doesn’t make it immediately trustworthy. You have to place the trust somewhere. If you can’t trust that the open sourced code is what’s running, it is effectively the same as running closed source software.