In my pitch I like to emphasise that the expenditure on focus fusion research will be quite small, and it will not take long to determine whether it is viable or not.
That is, I don’t assume that focus fusion will definitely work because I don’t want to come across as a zealot who has seen the light and has some “miracle” solution. People have no way of knowing how credible the concept is, and they won’t instantly take our word for it. Focus Fusion may well end up being a miracle solution, but we don’t know that yet.
And as a way explaining why it gets so little attention, I lead into this by talking about how misguided institutional science can be.