One of my favorite things to do while blazing is to watch videos and learn about marijuana and cultivation. Perhaps one of my favorites is pot-tv's Marijuana Man's Grow Show. The most recent Grow Show episode I watched destroyed my understanding of THC content in plants. In the links I attached he makes some great points. And leaves me believing that concepts of what THC percentages are- are completely flawed. I believe some weed gets you higher than others, and that some weed has more THC than others- but I do not believe their is an objective way to measure such fine qualities of a plant. When they list 18-23% THC what the hell is that 18-23% of? If anyone understands this concept of THC % than feel free to explain, but for a community so often quoting these percentages I think it is something that should be further examined and critiqued. Part one: The Grow Show - THC percentages, do they add up? YouTube - The Grow Show - THC percentages, do they add up? (part 1) Part Two: The Grow Show - THC percentages, do they add up? (part2) YouTube - The Grow Show - THC percentages, do they add up? (part2) And how the hell do you go about calculating how much thc a plant has, is there a DIY way lol? that would be sweet!