While I think it's best left assumed that they won't, I definitely think that non-technical users should make an effort to understand things like the basics of

While I think it's best left assumed that they won't, I definitely think that non-technical users should make an effort to understand things like the basics of a key exchange, for their own sake. After all, they are relying on these systems to exchange sensitive information. In general I think people should be more careful about handing out personal information.