How are cables directional?

I think that the skin effect is only for very high frequency signals - well above the audio band.

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One thing that is easy to forget when many try to find an answer on things they don’t understand. The human brain and ears are far superior than any measurement system in the world. Trust this super power we as humans have got instead of working against it.

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‘The Design of Experiments’ should be required reading in several fields imho.

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Isn’t that more to do with the earthing?

Um - really? Are you sure?

That’s an interesting one. Do you have a link or reference? I would say if she got it right 20/20 then something was different, odd as it seems. If we add acid to water, we get a different result than if we add water to acid - a volumetric effect that is quite dramatic! While I have no explanation for the tea example, I would not discard it but repeat it to confirm with alpha-squared probability. Repeating an experiment with an alpha of 0.05 (the probability of seeing an effect when none exists) results in an alpha of 0.0025 - compelling to most).

Yes

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Or it could be that they know that people think that there is a difference, so they may as well print an arrow on the outer insulation. That makes it easier to sell their cables. Indeed, if some sort of mystique surround these arrows, then arrows will be printed.

From Wikipedia:

The Lady Tasting Tea: How Statistics Revolutionized Science in the Twentieth Century (ISBN 0-8050-7134-2) is a book by David Salsburg about the history of modern statistics and the role it played in the development of science and industry.

image

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So the human ear/brain can, for instance, identify the frequency of an oscillation more accurately than any instrument? Or tell the difference between two notes, played several minutes apart, no matter how nearly they are in terms of frequency? Or detect any sound frequency, no matter how low or high? Etc.
We also know, very well indeed, that the human brain and ears are very easily fooled. Very easily indeed.

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I’m hearing a touch of tinnitus right now. Nothing is making the sound, my brain just thinks it hears it.

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And one can teach the brain to hear less of it even though it’s a damage to its system. Would be awesome with products that could repair themselves.

I claim something, you claim something. We will not agree. We move on and eat ice cream and listen to great music. At least I do and won’t spend a second thinking about measurements not proving what I hear is correct or not :slight_smile:

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Self-doubt is extremely useful. Or introspection. Essential in science, of course.

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Well, quite!

It is possible to teach the brain to think the Emperor is wearing new clothes, too.

Mind you, I’ve got me Naim cables all wired per the directionality instructions :slight_smile:

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Interesting read. While the experiment was somewhat limited in scope, there’s no arguing with the numbers!

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Suddenly wondering for what reason one would buy cables, come home, look at the arrows and go “You know, I’m gonna do it the other way around”. :joy:

If it works it adds something if it does not it makes no difference.

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Maybe, but the brain interprets the signals, and that’s been proven to be horribly unreliable. Especially its memory.

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Only if you are a restless soul that becomes an issue.

??

Not sure that’s what you’re suggesting here, but saying there are things that can’t be measured (yet) is quite a different thing from saying scientifically proven phenomena don’t apply (to you).

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