[Gumlegs]

Even in the matter of the speed of light, the average person lacks the tools and intelligence to measure it.

You shouldn't generalize from personal experience (or lack thereof).

[PatrickHenry]

The average person certainly can measure the speed of light to a fairly good approximation. The method isn't complicated. If you can measure the speed of anything, you understand enough to measure the speed of light. All you need is a telescope and a clock. With a more accurate clock you'll get correspondingly more accurate results. This is a repeat of the link post 346:
Measuring the Speed of Light with Jupiter's Moons.

[Fester Chugabrew]

You shouldn't generalize from personal experience (or lack thereof).

Shall I generalize from your personal experience instead? Maybe most people you know have spent their life running around taking measurements of the speed of light. Most people I know have gained whatever understanding they have of the speed of light from reading about it instead of direct observation and experimentation.