Ian White, G3SEK wrote:
If a problem can be solved without knowing what's in the box, you have
found a very powerful solution that will work for *anything* inside there.

Such general solutions don't always exist; but if you make a habit of
opening "black boxes" when it isn't necessary, you never will find a
general solution - and that's guar-an-teed.

The other side of the coin is that a black box can be used to obscure the
truth. It's easy to use a TDR to find out if the apparent steady-state
short at the black box terminals is physical or not. But such an experimental
act is prohibited by the steady-state religion. A large percentage of the
black box examples on this newsgroup are designed to obscure, not enlighten.
If obscuring is the goal, let's perform our black box experiments in total
darkness to make it even more challenging for truth-seekers.
--
73, Cecil http://www.qsl.net/w5dxp



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