"andy" wrote in message
oups.com
So getting to the point that perhaps you missed, if
someone says that the Mpingo Disks makes his audio
system sound better, I can't disprove it and neither can
you.

Nonsense. Unless the person claims being able to see
Mpingo Disks (whatever they are) is a requirement then
simply blindfolding the subject while adding or
subtracting the disks will determine the truth of what is
perceived or not.

Len is merely playing with words. The idea that Mpingo disks
are ineffective is a negative hypothesis, and is therefore
difficult or impossible to prove.

However, the idea that Mpingo disks are effective is a
positive hypothesis, and could possibly be proven.

But, the absence of proof is not proof of the absence.

OTOH, saying that you put forth a heck of an effort into
proving that Mpingo disks do something audible, and either
came up negative or had to do something impractical or
illogical is pretty meaningful. In these cases the truth is
in the eye of the beholder.

Note that some beholders couldn't see truth if it bit them
on the nose. Politics anybody? ;-)