The whole video is about changing the way we see medicine. Ok so just something you should know before I summarize this video for you, is that medicine ( more actually the way that we cure disease) has always been built on chemistry. In fact, people originally dismissed germs for that reason ( and that by expecting that,it would mean that they were killing the people they meant to save). So this guy seeks to change are understanding of medicine by showing how you can cure ailments like cancer, not by lock and key but by how nature does it. So what he theorizes is that we could find a way to use cells that help repair our bones when they break, to be able to make something like cartilage for people whose knee cartilage has degenerated. So it is a theory that could cause a second revolution in medicine and that is awesome.
the video: http://www.ted.com/talks/siddhartha_mukherjee_soon_we_ll_cure_diseases_with_a_cell_not_a_pill#t-640633
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