I have entirely rewritten an old post, “Power of the Human Mind – Anariya or Mundane Jhānas” that will hopefully address the questions raised by TGS.
It is only a draft, and I hope to refine it.
Feel free to point out any mistakes/omissions or ask unresolved questions so I can improve the post.
I went through other older posts on jhana, samapatti, etc., and some need to be rewritten or revised.