why do people feel the need to buy expensive cable

"[Nature] ... never says "Yes" to a theory. In the most favorable cases it says "Maybe," and in the great majority of cases simply "No." If an experiment agrees with a theory it means for the latter "Maybe," and if it does not agree it means "No." Probably every theory will someday experience its "No"—most theories, soon after conception."

Albert Einstein


>>>>As fate would have it in this hobby when a test proves negative it actually doesn’t mean “No.” It means “Maybe” because maybe the test was flawed and we’ll have to have someone else take a crack at it. And if the results are positive it probably means YES to the theory, though prudence dictates we get some more postive results on board for good measure. Any test is only one data point. Apologies to Albert.

The quote is in an article in Forbes titled "Scientific Proof Is a Myth". The main premise of the article is that "nothing in science can ever truly be proven. It's always subject to revision."

 

Tell me all that you know
I'll show you
Snow and rain

- Robert Hunter, Jerry Garcia

Actually there are many things in Science that are not (rpt not) subject to revision. The absolute constant of the speed of light in a vacuum, the mass of an electron, all elements have exactly the same composition everywhere in the universe, the universe is expanding forever, the physical characteristics of a black hole have been known with absolute certainty since the 1960s, the hypotenuse of a right triangle given the other two sides is never in doubt, the equivalence of energy and mass (E= Mc2), all electromagnetic waves are comprised of photons, and all manufactured wire is directional. 

....... and all manufactured wire is directional.

Untrue, to the extent there is any audible distinction a human can detect with the naked ear.

The comments seem to  be  going a little off topic.
Please try to stay on topic for the best interest of the other members interested in the OP's Thread.