What would Bitcoin for wetware be like?

[bosshyip]

How different would Bitcoin be if it was designed to be handled completly by humans?

Can the proof of work dificulty be tweaked to an extreme such that regular people with spare time could solve blocks with pen and paper? How would the network work with people exchanging and copying sheets of paper? Would it be possible to get reliable confirmation of transfers in less than a day? What would need to be changed and what would work just the way it is?