At the moment, we don't know how much it would cost to send a human being to Europa. I presume that your intent is to bring him back? That will cost much more Considering the money that NASA has squandered without ever leaving low Earth orbit since 1973, the cost to go to Jovian space would likely exceed 5 trillion dollars if done by a government agency I have no way to know how much less it would cost for the Rutans to do it, but I suspect that it would be at least one order of magnitude less.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.