There is this list of things tech people think they understand (DNS, javascript), and more common you can see this with everyday people, e.g. with stuff like elections: the basic concept is clear, understandable, but the devil/complexity is in the detail, how to handle certain exceptions. I was employed by the Election Management Body of The Netherlands for a few years, so I can only vouch for the complexity of that relatively simple election system, but I'm pretty sure it will hold for about every country ;)