So, let me make sure I have this right: 1. Fecal transplants are pseudoscience, because we don't know if they work. 2. We should assume they work, and identif

So, let me make sure I have this right: 1. Fecal transplants are pseudoscience, because we don't know if they work. 2. We should assume they work, and identify specific microbes within them that are relevant or dangerous. That's contradictory. Further, without data from examining #1, #2 is almost impossible - there are at least 1,000 species in our gut at all times. The only identification process I know of that could be reasonably affordable is 16S RNA sequencing, which is still expensive and would be nearly impossible to do properly on the 0.5 - 1.0 kg sample of gut bacteria (yes, that's the weight of just bacteria) from the average human. Not to mention that evidence suggests that gut bacteria act in concert, that is, we'd have to examine combinatorially many combinations of these 1,000+ species to get any real data. This is just nonsense.