Hi Selvaraj,
I hadn't heard of Plato's Cave before. It's an extremely good analogy and related to how it is so difficult to teach people about the Alexander Technique - or any mind/body method.
There is one way of arriving at truth through observation of what is apparent and making deductions.
There is another way which involves seeking new experiences - getting out of the cave.
Added to this there is a special branch of new experience - the ones that bring somatic re-adjustment in the system and the knowledge that comes from this.
Then I think there is another layer of 'knowledge'. When people are affected by somatic re-adjustment they don't understand how they changed so they attribute it to something - 2 explanations I know well are Primary Control & Rebalancing of the Autonomic Nervous System. But some add more fanciful ideas - paranomal / super-natural forces. Some may actually experience things we think of as super-natural but we don't believe them so think they are fantasists - something that makes this field of study very difficult to navigate!.
But also when people try to comprehend words from a person writing from these experiences they will not see the meaning that the creator of the words intended - something Alexander wrote about.
From spiritual circles there are writings about how the ego stops the thinking mind from seeing how the world actually is. As you meditate (or do lots of hands on Alexander work) parts of the ego weaken and the interpretation of things in the word changes - you see things more as they really are, This is a thing people tend to think of as a learned skill but I suspect it is more that rebalancing of the ANS (& the changes related to that) reduces that part of the ego.
I think Alexandr's writing about emotional gusts & fixed beliefs and prejudices might be in alignment with that idea.
Cheers
Keith
PS I hope you are keeping safe from that horrendous covid wave we are hearing of in the news here.