lot of wisdom that comes down from centuries cannot be proven scientifically.
Yet the modern world acknowledges a debt of gratitude to ancient people
who passed down their knowledge to their children who in turn transmitted
the knowledge to their children.
this reason, anthropologists and scientists study remote tribes in place
like Latin America or the Andaman Islands. They feel they can learn
a lot of ancient wisdom from tribals. Ayurveda, homeopathy, and Unani
medicine aren't taught in Europe or America. But they thrive in India.
Primitive tribals in Latin America, for instance, will cure a fever
by getting a patient to swallow a soup made form boiled roots and leaves.
They are illiterate, if you ask them how the soup works, They will shrug
and say they don't know. But their inherited knowledge has come down
over the centuries. It's the same thing with tantric items. They work
on the premise of staunch belief.