संज्ञा revolution
(This is a hypothesis. It will take more work to prove it to others. I dont have time or energy, at present, to prove it partly because, for me, this is sufficiently proven, and partly because I have so much work on, this has moved to low priority once i have conviction.)
Identifying a sound sequence to belong to a uniquely identifiable class (वर्ण) is essential to communicate thru sound.
The cognitive unit in which sound is classified is वर्ण.
When Hominina split from Homininae, for some reason, the temporal (time) length of वर्ण that can be uniquely identified, reduced, compared to other Homoninidae like Panini.
As a result, multiple वर्ण could be held in temporary working memory.
This enabled the use of multiple वर्ण-समास to be fit in working memory.
वर्ण-समास is not a वर्ण but a pointer to set of वर्ण.
This is equivalent to the invention of a pointer as a variable.
This is recursion.
Selection bias in evolution resulted in this recursivity to strengthen over generations and eventually become totally abstract and limitless.
I believe this happened through 1BGCT loops. Genetics gives infrastrucgture but does not activate the potential. That depends on exposure to language.
संज्ञा revolution is this ability to “refer” to a bundled meaning. Ability to treat the bundle as an object without unpacking its contents.
When _Homo Erecrus became aware ofthis ability to name/point things, he called it bundling - संज्ञा.
The usage (of word संज्ञा) as an abstract concept eventually erased this original physical meaning of संज्ञा as a “bundle.”
Footnotes
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The basal ganglia and chunking of action repertoires by A M Grabiel (https://pubmed.ncbi.nlm.nih.gov/9753592/) ↩