works in a society with lots of plants
the world heating up like it is with many species of plants vanishing
since the ice age finally receded, plant based pharmaceuticals no
longer became viable
current research into ancient and medieval or primitive recipes and
medicines is revealin startling medicinal qualities in many plant
combinations
unfortunately, modern science can only understand plant properties if
they can isolate the active compounds
minus good luck, they are stuck with plants with many active compounds
with unknown properties they don't know how to test for and detect
also too plants changes chemical properties over time so many ancient
recipes just don't work today and we just don't know which plants the
ancients or primitives actually used