Be there some truth to these capacities used or not - I think we all sense that there is truth to it that even the absolute geniuses run below their true potential, and we could look at this from many angles.
The ones that we may perceive as coming close to full potential used are people like the miracle mathematician Ramanujan that was in contact with a form of Shakti, his formulas are so advanced they are still proven today. Tesla worked on his ideas in a sort of lucid dream state and was aware of the liminal states after and before sleeping. We all know stories of the Holyman in India, the Tibetan and Shaolin Monks performing 'impossible stuff'.
I would argue that those that 'think the least' work at the highest capacity if the pathway is established - meaning similar to body memory, when the task is repeated often enough, be it a pencil stroke or a thought process - when these persistent practitioners enter the state of non attachment they truly become the most potent antenna as they paved the way by maximizing their potential to be one.
If our thoughts and ideas do not originate in our squishy organ we only have to fish out the idea that is shot down our conductive wetware via some uranian strikes - and there it is for a short moment, eureka, better have some pen and paper.
So the analogy of the app that only uses a little fraction of processing power fits perfectly i guess.
Regarding unused potential, we also all know this is very sad and true too. While most of our forefathers simply did not have the luxury of thinking about the 'worlds problems' being busy with their own, we now usually have the time but our mental hygiene is threatened and attacked from all angles with perfected precision and algorithmic triggers. Digital detox is not a trend anymore, it's duty.
On top of that there is a scientist that was wrote a book on the creepy topic of our brain under attack, as a combination of certain 'modified proteins' and a constant overload of catastrophic messages overload the brain and literally overwrite personalities and lessen the ability to think critically etc. If you are interested in that check out this interview:
If we look at our brain capacity from a different theoretical angle - the concept of the vedic yugas for example - we could imagine that we are maybe using less of it's true capacity as we are in a very 'matter first' perception of reality right now, where many have completely lost the access to their own spirituality, the trust in their intuition and so on.
So with psychedelics and breath techniques besides maybe also lucid dreaming and similar astral techniques we can start to imagine what vastness of states of perception exist and are there besides the realm we are navigating in our everyday torment -
anyone that has floated around the block on such a substance knows how much of the ability to navigate the everyday reality is limited by these.
What I mean is that we function through limitation of our perception, as seeing all that's happening would be so profound we would be in a state of orgiastic drooling bliss while walking around like filthy wrecks unaware of our physical appearances.
Similarly we should approach our vulnerable state of being bombarded by filth by eliminating it as much as we can to be able to navigate in accord to our will without ending up drooling at pixels and crying over non-matching mirror appearances compared to pixels.
Of course besides the huge not fully understood metaphysical processes there is the physical, there is the optogenetic part i mentioned with the invasive artificial light optogenetic attack (that we can counter by light therapy and digital detox) and there is the biochemistry that we can optimize to be 'better obelisk antennas' -
In nutrition alone is much wisdom - like many say living plant foods are more electrical in energy and animal foods more magnetic in quality, make out of it what you like, i guess it has some correspondences to the more celestial and more chthonic realms. There may be some higher truths in that, still our greek and mesopotamian buddies etc ate a mixed diet and were fine as far as i know.
So one can optimize that lil spaceship body, today the better than ever, and still the huge trap of overthinking makes our software run slower, like some shitty stained windows bloatware thing that installs huge surveillance systems on its own without consent, have a look at linux people.
So that are some thoughts i have on this topic, if you feel like exploring the relationship of language and reality, ai and consciousness further feel free to join the little thread I started a while ago to collect resources on related topics
here.