Understood
It was your use of the phrase "care to enlighten me" that confused. As I took the request for enlightenment to be that you didn't know already and therefore believed (due to lack of evidence to the contrary) it to be a constant.
Plus, my points were not actually to contradict you, more to add fuel to the debate.
Plus the ability to make light go at such slow speeds is just rather cool, regardless of the science behind it, you can just imagine the conversation over dinner:
"Honey, what did you do today?"
"I slowed down the speed of light to 37mph - how was your day?"