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8/18/2022

Can something be False but Not Fake? Taking a Look at the Images from the James Webb Space Telescope, Geiger Counters, Your Brain, and the Amazing Realm of Perception

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Many of us are were awed by the release of the first pictures taken with the James Webb Space Telescope (JWST). The telescope’s crystal-clear images identified previously unseen galaxies, which formed just a few hundred million years after the Big Bang, giving a us a closer glimpse of the early universe. It also revealed many new instances of gravitational lensing, a phenomenon predicted by Einstein, where a strong gravitational field bends light. And it identified many stars in the process of formation enveloped in clouds of dust and gas exposed to titanic forces unleashed by galaxy collisions or the explosion of older stars.
​

Picture
The Cosmic Cliffs in the Eta Carinae Nebula

​However, not everyone was thrilled. A group of skeptics started arguing that the photos were fake, and the fact that the first photo of the JWST was unveiled by President Biden in a ceremony at the White House provided the politization element. Someone also pointed out that the name of the galaxy cluster featured in the first image, SMACS 0723 (which stands for Southern MAssive Cluster Survey), reads “SCAM” when spelled backwards. Conspiracy theories arose claiming that the fake images are a cover up and the telescope is really a spy satellite or a weapon of some sort. It also didn’t help that a scientist as a joke posted an image of a slice of a sausage and claimed that it was an image of a nearby star taken by the JWST. Additional confusion was caused by the information that the colors in the images were not the original colors (they were false colors!), and that the images underwent a lot of computer processing (manipulation, eh? nudge, nudge; wink, wink) before being released to the public.
 
So there you have it. A presidential photo op, hidden word messages, false colors, computer generated images, fake science, and conspiracy theories. It’s déjà vu all over again! Shades of QAnon, the 2020 election lie, the 911 conspiracy, and the moon landing hoax.
 
All this nonsense is of course, fiction. However, as it has been stated many times by many people, truth is stranger than fiction.
 
There is a process called “transduction” where a signal of one type gets converted to a signal of another type. A classic example of this is a Geiger counter, where the signals produced by radioactivity (ionizing radiation) are converted (transduced) into sound by the sensors and electronics of the device. Radioactivity obviously does not make a sound. The sound is a false representation of the radioactivity, but this does not make the Geiger counter readings fake. This is because the sounds produced by the Geiger counter are correlated to the intensity and timing of the radioactive emissions. Thus, with the Geiger counter we can detect a phenomenon (radioactivity) that otherwise we cannot perceive with our senses.
 
The same thing happens with the images from the JWST. The images we have seen were taken with the telescope’s infrared cameras. But the problem is that much in the same way that we can’t perceive radioactivity, we also can’t see light in the infrared range. If we were to look at an unprocessed photo generated from the data from the telescope, we would just see faint darks and greys. The infrared photos have been converted (transduced) to the visible range much in the same way that radioactivity is converted into sound by a Geiger counter. Colors have been assigned to these images in order for us to see them. So yes, the images we see are in false colors and have been processed by computers, but they are correlated to the realities that the JWST is imaging. Thus they are not fake.
 
And in case anyone remains skeptical about this, just consider that YOU do this all the time.
 
Say what?
 
Yes, you, or I should probably clarify, your brain, transduces signals all the time. In other words, your brain constantly changes one type of signal into another. Let me explain.
 
The light we see, the sound we hear, the odors we smell, the flavors we taste, and the things we touch are not sensed directly by our brains. They are sensed by receptors at the level of our eyes, ears, nose, tongue, and skin. These receptors then proceed to convert (transduce) these light, sound, odor, flavor, and touch signals into electrical signals. These electrical signals then travel to the brain through specialized structures in neurons called axons, and millions of these axons make up the cables that we call nerves.
 
So when we are exposed to light, sound, odors, flavors, and things we touch, what the brain perceives is shown in the figure below.
​
Picture

Those spikes in the image represent the electrical signals travelling down the axon of a neuron in time (the horizontal axis). This is the reality that the brain perceives. Not light, sound, odors, flavors, or the things we touch, but rather millions of these electrical signals arriving to it every second.
 
Now, do these signals make any sense to you? Of course not! The signals have to be transduced.
 
The brain does something similar to what the Geiger counter does or what scientists working with the JWST do. The brain processes the electrical signals coming from our eyes, ears nose, tongue, and skin and generates the sensations of sight, sound, smell, taste, and touch. These sensations are as false as the sound made by the Geiger counter or the color representations in the images of the JWST, but they are not fake in the sense that they are correlated to reality.
 
So, for example, we cannot see the wavelength of the light that impacts our eyes, but our brain associates the wavelength of the light with colors in such a way that we perceive light of short wavelength as purple and light of long wavelength as red. This association of false brain-generated sensations with the realities around us also takes place for the senses of sound, smell, taste, and touch.
 
So to wrap it up, what you see, hear, smell, taste, and touch is false, just like the sounds a Geiger counter makes or the color of the images of the JWST, but not fake, because these things are all correlated to reality.
 
Welcome to the amazing realm of perception!

 
 
The image of the trains of electrical impulses belongs to the author and can only be used with permission. The image of the Cosmic Cliffs, a star-forming region of the Carina Nebula (NGC 3324), is by NASA and the Space Telescope Science Institute (STScI), and is in the public domain.
​

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