I also love documentaries. I love to learn something new whenever I can. When I watch tv its either NatGeo, Sci, or TRU. Downloading now. This one looks well produced, nice graphics at the start. Thanks!
I watched this a second time around, and noticed even further that this doc is MAINLY on the SMOKING of cannabis. The studies involved analyzed the physical/mental short/long term effects of cannabis smoking. They did mention edibled and vaporization..but their studies of SMOKED cannabis ended up being neutral, maybe even beneficial in some cases...you'll have to watch for yourself!
Ultimately, I would assume we all still prefer the method of vaporizing.