"When you get down to it, thinking everything turns to ham when you turn away from it is no more absurd than thinking everything doesn't turn into ham when you turn away"
"I don't see how you know how the universe works"
The wonders of science.
"Sure, your reasoning is logical, but it cannot be proved if you are not there to hear it"
Irrelevant, the mechanism can be proved. My presence does not alter it.
"Forget that, it cannot be proved anyway as it has been established it's impossible to prove anything"
It is impossible to "prove" anything absolutely, Decarte pointed that one out. So we are faced with a choice, do we believe that our sense's are based on reality or are they being "faked" ala the Matrix. Given the improbability of the later, most people choose the former.
Given that choice everything I have said holds true.