In skimming through the support documents I saw references to burning cannabis seeds to attain an altered state. How do seeds produce a psychoactive effect? Most of us would go out of our way to avoid smoking seeds. Better to roast them or grind into flour for various nutritional uses. Maybe the ancient shamans actually threw whole buds on the flames and that somehow came down in the lore as using seeds? Or is there some benefit to seeds that I've missed out on all these years?