After all, off in a democracy an expert expects to be paid by taxpayers to make decisions that affect the taxpayer the expert should be, at the very least, be able to explain himself in an intelligible manner.
Thats the bare minimum of expectations. I also expect the taxpayer funded expert to provided full access to his data, notes and analysis software.
Im considered an expert in thermodynamics, materials science and E&M. The people that pay me routinely don't understand what I'm working on, but they expect me to explain myself.