Copper vs. Platinum? plugs

[mustangII460]

Platinum plugs (and Iridiums) were introduced to provide longevity
(60k-100k+) to vehicles compared to copper plugs which foul after 3000-5000 miles, but
they do NOT dissipate heat fast enough (which leads to pre-ignition/detonation)
and do NOT provide a "better spark" like they have claimed...with their
"fine-wire electrode" (which only causes problems).

Copper is one of the best conductors, but they just plain don't last. Using
Platinum and Iridium plugs, the center electrode (fine-wire) thin, that get really hot, they will begin to "heat glow" and cause premature
ignition in the combustion cycle (pre-ignition => detonation). This is especially a
problem for turbo/supercharged guys. Copper on the other hand, has a much thicker
center electrode, on top of that, the copper material is able to dissipate heat
from the combustion chamber fast enough to keep the combustion temperatures
lower.