It's good to ask a question like "Are you afraid to drive a car just because you don't know the first thing about how it actually works?"

or

"Do you have to conduct thorough research about aerodynamics and flight before you can be a passenger on a plane?"

or

"Do you have to take a class on TCP/IP before you feel comfortable using the internet?"

As stated above, the plumbing only matters to plumbers, and those aspiring to become plumbers.