it's not possible to make everyone understand nuclear physics, there is certain threshold of cognitive skills/motivation required for that.
replyThe people involved in commissioning and funding nuclear power plants don't understand nuclear physics either.
replyThe customer doesn't need to understand how the solution works, as long as they can understand that it would solve their problem (in the case of the power plant: producing "clean" energy) and any potential drawbacks or limitations (in the case of the power plant: the waste byproduct).
The point here is that as a "tech person", it's your job to help the customer understand the cost of what they're asking, and come up with a satisfactory solution based on your understanding of their needs.