Do people know how money is printed? But that does not stop notes from being an easy to use tool.
i think you miss the point. with fiat they don't have to understand it to trust it, and even if they didn't they have no choice. with crypto as cash they have to understand it to trust it, and they have a choice.
average joe hmmm trust something we have been using our whole lives and have to use Verses something which is no real alternative, that we don't understand or trust
Trust can propagate. It's very difficult for those who do not understand it to directly trust it. But if they see their tech savvy friends are using it, they will start to trust it. For example, if Obama starts to use it, will people start to trust it?