Humans , animals, and all of the species are not visible before their birth , they do however exist in their subtle form awaiting for the new arrangement of the atoms , elements and compounds to programme themselves accordingly . The information for the selection process is contained within ones previous attachments in subtle form and within particular karmic synchronicities , and then its devolved into mattee , the Divine algorithms easily do their work, as much as Ai easily brings forth informations exchanges, and automatically the responsive universe awards similarly minded persons, or sometimes enemies to become parents or relatives.
The Srimad Bhagavatam makes these matters clear…

We would hasten to add the many possibilities of quantum physics and the work of Bohr and Schrödinger who studied the Vedas to an extent parallels the Bhagavad Gita’s teachings .

Matter responds to consciousness in many, many ways , some obvious some not so .

In the Vedas Jnana yoga means to intelligently acquire knowledge, and Sankhya means to apply the knowledge with thoughtfulness  and discernment accordingly and in different stages of life or different situations and time periods .

The fanatical unthinking religionists lack sankhya and discernment

More on this later
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