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.