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I think the idea is to filter it out (which is also not easy) but then this gives you a way to destroy the concentrated pfas left behind. Because otherwise what are you supposed to do with the material you have filtered out? It’d be cool if regulations required the cost of destroying pfas be added to the sale of pfas which might help manufacturers decide that they don’t need to add pfas to disposable things like paper plates after all.
After seeing the one where they slam Dan’s face with a ball and you see his skull moving under his skin I realized there can be entire fields of study around insanely fast cameras. What we see in real time doesn’t even compare. Also the one where Gav shows how CRTs work is still my favorite.