(we all concentrate, for work, play, reading, studying, school ... we practice it in school ... people who are good at it are "good workers"...)
But you call it CONCENTRATION instead of IGNORING because the stuff you concentrate on gets easy-to-see but the stuff you ignore sorta fades away (and then you stop thinking about it, and then it disappears).
The stuff you concentrate on is relatively small. A book. An idea. A game. An attractive girl's butt. A plan for the future. A tv show.
And that stuff getting ignored is relatively HUGE. Like a whole invisible universe there.
It's spooky when you think of it. Like a little bit of DIY brain surgery that everybody does but nobody talks about. Like we're all a bunch of Harry Potters casting obliviate upon ourselves.
And then we forgot that we cast it, because it's obliviate.
Concentration is always about removal. Concentrated orange juice has water removed, for example. You remove what you don't need so you can devote more effort to what's important.
Ignoring the fact that you're clearly high as a kite - it's all tricks your brain does to conserve resources. Without any focus or filter, your brain would very quickly spread it's resources too thinly, and subsequently burn out.
It is much easier for your brain to process a lot of data about a small number of things, than a small amount of data on many, many things.
"humans are excellent at ignoring" is something I like to tell students, because its computationally impossible for any intelligence (human or AI) to remember and process 24k-resolution-esk information every millisecond. Data must be thrown away, and humans are actually exceptional at it.
If AI could ignore the correct things, we would already have AGI.
Also search "invisible gorilla" on youtube if you haven't already heard of the phrase.
There are many aspects of life that are amazing, but since they are routine they seem commonplace. The amount of processes that occur within the body automatically are staggering, like heart rate, blood pH, body temperature, digestion, immune response, etc. Everyone of those is nearly magic, but we have no control or are not usually conscious of them, so it's mundane. We are piloting these incredibly complex biological machines.
I'm no expert, but I believe when people are suffering from chronic oversensitivity to external stimuli (individuals on the autism spectrum which have lower functioning commonly suffer from this) they are lacking this ability you speak of op. They are the nonmagical users to continue with your harry potter analogy.
Given that we must direct and (to a degree) concentrate our attention to perform even minimal actions like reading, posting on lemmy, making a bowl of cereal... I think it's less black-and-white than you portray.
It's a fuzzy thing. And changable with effort and practice.
It is kind of surprising how we can come to some truly interesting thoughts/ideas when high. But at the same time can struggle to process simple things going on or have our mind blown by the magic that a microwave seems to be when stoned.
Think about it like this: There is an almost endless amount of stuff around us at any given moment that we could be aware of. If we factor in the things that are not actually there but we can still think about, then there are infinitely many things we could be paying attention to at any moment.
But we only have a finite amount of energy to do it. The more energy we use to think about one thing the less energy remains to think about everything else.
I wouldn't say that we are ignoring things when we concentrate. Because to me when you ignore something you are actually aware of it but choose to ignore it. When you concentrate, you just don't have enough energy left to be aware of other things.
Concentrating on distraction, on counter-productive-meaning, on digging-the-dysfunction-deeper, on ideology/prejudice ( 2 sides of the same "coin" ), etc,..
develops concentration
in the wrong direction/way
Concentration, however, in dismantling one's unconscious identity-crystal, underlying one's ego can be vastly life-improving.
( Modern AwakeSoulism/Buddhism forgot that it is the unconscious-mind's identity-crystal, not the "conceptual 'I'" that is the obstacle distorting our Soul/Continuum's life.
Just because modern Buddhism is ignoring the essence of its own root-teaching, doesn't mean we need to do the same.
The root-instruction was important! )
The book "The Worm At The Core" is, in spite of being existentialist, and missing/ignoring the fact that all herd-animals have the same death-denial-mechanism our minds have, the key to understanding just how manipulating this denial-of-IDENTITY-death mechanism is.
Once one understands how one's whole life is just an exercise in pretending-away one's identity-crystal's death, then one can get at attacking the false-identity, the identity-crystal, itself, & see what awareness-expansion lives when awareness isn't shackled/crushed into fitting that identity-crystal.
AwakeSoulism/Buddhism seems to have forgotten that it is the annihilation of the identity-crystal, the "self", that liberates AWARENESS.
All the disputes between branches of Buddhism over whether non-thinking is valid, etc, whether non-awareness is the goal ( idiocy, that ), etc, it is annihilating/dismantling-absolutely the identity-crystal, leaving AWARENESS that is the goal, and only right-concentration can produce progressing in that direction.
Concentration's a tool, and it is neutral.
Same as violence is neutral: violence against cancer, against rabies, against parasites, is good, right?
Most people presume that neutral-factors/tools are inherently-bad or inherently-good, because their ideology/prejudice already-decided on that nature, but when you see what-is as it actually is, you realize the eating a bowl of porridge is doing-violence to it, and you realize that painting is doing-violence to the blankness of the paper, then you realize that all actions eradicate alternative-potential.
This is true of mental-actions as much as it is true of physical-actions.
Concentration is, itself, neutral.
Invest it in what grows your Soul/Continuum, & it'll do your Eternity good.
I think that what you concentrate on is not key. I think that the shape of your awareness is key, the shape assumed via concentration being one such shape.
Like clenching a small object in your fist. It doesn't matter whether it's a penny or a pebble. It's the same shape.