Recent comments in /f/explainlikeimfive

680228 t1_j5hxq6x wrote

Companies that use "leading brand" or "other products" are simply more risk averse (they don't want to get sued). Companies that name their competitor are not afraid of being sued. This could either be because they have proof of their superiority claim, or they are comfortable with the legal risk.

All large companies that advertise have legal counsel (sometimes external, sometimes on staff). Generally, a lawyer will assess the risk of a claim and advise the decision makers in the marketing department of the risk level - high, medium or low. A high risk claim has a higher likelihood of provoking legal action from a competitor, and has to be signed off by a more senior director or VP. However, if they have facts and data to back up the claim, and can defend it in court, they can run with it.

Networks will not allow commercials with superiority claims to air unless the advertiser submits substantiation backing up the claim. Local stations are less strict.

I'm an advertising producer, and I've worked with large advertisers that do the "leading brand" thing. Any time we did a side-by-side efficacy demonstration, I had to sign an affidavit that the demonstration was real, shot and edited without special effects. Companies do sue each other, and have even gone as far as sending a subpoena to view raw camera footage from the commercial shoot.

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WeDriftEternal t1_j5hmp0k wrote

No legal issues in just making a comparison or mentioning another brand, as long as you don't say intentionally damaging and false claims, like saying Michelob makes you a cannibal. Sometimes they simply don't want to advertise their competition.

A side note though, if you are the category leader, like say Coke over Pepsi -- you NEVER, ever mention your competitor. You are the champ, they are nothing to you, you don't mention them,

If you're not the cateogry leader, you can and often do call out others in the industry to say why your product is better than them. That is, Pepsi will say its better than coke, but Coke will never mention pepsi

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Diogeneselcinico42 t1_j5goyt5 wrote

It's mostly genetic. Body language and facial expressions are largely programmed into our DNA and we are born with the knowledge of how to perform them and interpret them. This is unlike verbal language, which is 100% learned.

Have you ever noticed that no matter who the person is on this Earth, whether they be Chinese, African, Native American, European, etc, you can kind of tell if they are happy or sad from a picture or drawing without ever needing to learn anything about their language? This is pretty remarkable. We have a mechanism of communication amongst humans that is universal and belongs to us as a species.

Dogs and other social mammals also have body language cues they use to communicate with one another. You can look up a handbook of all the various dog body language meanings. Tail wagging indicates they are happy or anticipatory, raised teeth and ears back indicates aggression, etc.

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Human_Ballistics_Gel t1_j5geon2 wrote

The same way your ears hear more than one frequency.

The sounds around us are composed of a complex range of frequencies mixed together. Those mixed together sounds impact your eardrum causing it to vibrate and you hear it.

If you were able to make your eardrum vibrate the same exact way, and amplify the movement, it would emit the same sound you just heard.

Electronic speakers and microphones are the same.

Very simplified, microphones are just speakers. Electricity applied to a speaker makes it move.

This works in reverse too, moving or vibrating a speaker manually makes tiny bits of electricity that match that movement or vibration.

The complex pattern of sound hitting a (mic / speaker) and the resulting complex pattern of electricity it makes can be recorded.

Then you amplify and play back that pattern of electricity to a much larger and louder mic/speaker and that same sound is reproduced

Your ears or a microphone actually move very very little with sound. So you can hear low and high frequencies at the same time.

Similarly most (not all) headphones are just a single tiny speaker that do a decent job of reproducing most frequencies that humans can hear. They can do this because they don’t have to move very much (and be very loud). Again, like my “your ears in reverse” example.

However large speakers have to move a LOT to make very loud low frequency sound. If a speaker is moving an inch back and forth 500 times a second, ALSO trying to make it vibrate a fraction of a millimeter’s distance, 20,000 times per second at the same time doesn’t sound very good.

So to make loud amplified sound, sound better they divide up the work. Small very tight speakers (tweeters) are good at making high pitched sounds. (But can’t move enough to make loud low frequency sounds)

Large loose speakers (woofers) that can move a lot are very good at making low frequency sounds. (But are not tight enough to make loud high frequency sounds)

Inside a speaker is something called a crossover that divides up the electric pattern such that high frequencies go to the tweeter and low frequencies go to the woofer.

That way you can more accurately reproduce loud sound at much higher volume levels.

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IAmXlxx t1_j5g020q wrote

Paul Ekman is a psychologist famous for his research on body language/nonverbal communication. He found that there are at least several "universal" emotions and corresponding facial expressions, like anger, sadness, joy, disgust, etc. However, there are thousands of expressions our facial muscles can produce, and it's probable that we learn at least a few of them from our environments and cultures.

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BeneficialWarrant t1_j5fm1b3 wrote

All the speaker does is move forwards and backwards. Its a linear motor.

If you take 2 signals (say 2 simple frequencies) and add them together, you get a new, combined signal.

Picture

The above combined signal is created from 2 simple sine waves with a high and a low frequency. If the speaker moves in the combined pattern, it will create waves of air pressure which will stimulate 2 different length hair cells in your cochlea.

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