Hi Jim (Jea48),
I recall the discussion in that 2010 thread, in which I participated. IMO the
long series of arguments between Herman and Simply_q was basically silly
and unnecessary, and to a large extent revolved around the meaning of the
word "flow."
IMO, for pretty much all practical purposes it is reasonable to speak of
current as "flowing," even if that is arguably not what physically
happens. The basic point, as you and I and most of those on both
sides of the issue agree, is that when a voltage is applied to a load via a
cable energy is transferred in just one direction. Assuming, that is, that the
load is resistive, and that reflection effects that can occur mainly at RF
frequencies due to impedance mismatches are negligible. (Which BTW,
as I indicated in my post dated 12-2-16 can under some circumstances
very conceivably cause a cable to exhibit directional characteristics
regardless of the existence or non-existence of wire directionality).
Unfortunately, though, it seems clear that agreement on one-way
transfer of energy (assuming a resistive load and negligible signal
reflections at frequencies that matter) will not lead to agreement on
whether or not wire directionality exists.
Best regards,
-- Al