That's so true - so much we don't know.
Also, there's so much we DO know, but it's being suppressed, or at the very least, not officially recognized. Since the late 90s, scientists from many respected universities and hospitals around the world had confirmed that cannabinoids treat certain cancers. And Nixon's scientists found that too, in the mid 70s, when he was hoping they'd find the opposite (that cannabis CAUSES cancer) so he could use it as fuel for his War on Drugs.
Amazing how such knowledge has been kept from the majority of us for decades! And maybe that's not even the entire story - perhaps it goes deeper, and back even further?
One thing seems sure... we need to end prohibition, and stop censoring this knowledge!