Because when you start scanning at first, they ARE different each time.
This is a complex question, and there are a number of reasons why it happens. First is the nature of the terrain you're scanning - your body.
In 1972 and 1977, two different studies assayed the human body in order to determine the bacterial load carried by the average person. They found that the count of bacterial cells was 10 times greater than the number of human cells - meaning that we humans are actually 90% bacterial and only 10% human.
A recent Israeli study revisited the topic and claimed to find errors in the original research. The revised figures estimate an average of 30 trillion humans cells and between 39 and 50 trillion bacterial cells - a ratio of between1.3 and 1.7 to one.
As mind-boggling as this, the vast majority of these bacteria are commensal - they benefit from us without affecting us in any way. Some are beneficial to us, and are actually essential for life - 70% of our immune system is made up of such "good bacteria."
All of these organisms - the good, the bad, and the harmless - have Mortal Oscillatory Rates between 76,000Hz and 880,000Hz.
When you perform a systemic scan, you are inputting frequencies at full amplitude that cover this entire range. So in itself, this scan is also a powerful treatment, and some users experience Herxheimer reactions after it such that they need to detox.
So your first scan will kill many different species - but because their destruction caused a stress reaction in your body, their mortal frequencies are recorded in your scan. After you've used the results to treat as recommended, you will have removed them all, so they won't be found in your next scan.
Another complicating factor is that for time reasons, it's really only practicable to seek the top 20 "hits" in your body with every scan. However, some species seem to die a "noisier" death than others - we call these "the loudest screamers" because they cause bigger stress events in the body.
Because biofeedback scanning has no way to differentiate between the bad and the harmless, these are the ones that Spooky Pulse will record.
The nasty stealth pathogens, on the other hand, which have evolved ways to evade the immune system, seem to die much more silently, so they don't call attention to themselves. As a result, their frequencies don't initially get picked up and recorded. Each time you scan, you find another 20 of "the loudest screamers" that remain. And even these may not include the bad guys that are responsible for your illness.
For that, you must first remove ALL the loudest noisemakers with repeated scans. When you've done this, there will be no "loud screamers" left to drown out the death throes of the nasties, and your results will now include their mortal frequencies.
There are also other factors involved. Killing bacteria, for instance, will invariably release the viruses that infect them, as well as toxins. Some bacteria that manage to survive the first scan may change to a "cyst" or other forms that's not as easy to kill next time. And killed parasites will release bacteria, viruses, toxins, and heavy metals.
This means that your terrain is in a constant state of flux, never the same from moment to moment.
Given all of this, it's unreasonable to expect repeatability in successive scans until you reach the layer of hardier pathogens that are doing the damage, or to believe that one or two scans will solve all your problems, although they will definitely help by removing many burdens on your immune system.
Getting to the root of disease is like peeling an onion layer by layer. This is why the method we recommend is to scan, use your results in Contact Mode 7-8 times, then scan again, and continue in this way until you reach your desired objective.
After about 2 weeks of scanning, your body will settle down from what it reports during your scans, and you will find the scans report the same issues more often. It’s amazing how accurate the GX scans are, sometimes frequencies will show themselves quite pronounced, after some of the other found frequencies are running.
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