Hi — My understanding is that TED instigated the guidelines as a result of a response by some very vociferous skeptics to talks by Rupert Sheldrake and Graeme Hancock in 2013, questioning materialism. See this link: https://www.sheldrake.org/reactions/tedx-whitechapel-the-banned-talk See also Craig Weiler’s book ‘Psi Wars.’ During the course of this dispute, TED tried to demarcate the difference between science and pseudoscience. Doing this they ran into the problem that has dogged philosophers of science for a very long time: despite many claims to the contrary, there are no consistent, agreed criteria for doing this in a universal, satisfactory way. Currently, we’re living in an era of VERY entrenched factions who would basically like to see the destruction of what they see as their rivals. We’re also living in a post-truth era, so those who support reason and science are basically circling their wagons for understandable reasons. (i.e. rampant censorship in federal science programs, etc.) The danger is that in doing so, supporters of science will become more dogmatic and less tolerant of dissent. IMO we need something like a science court to negotiate disputes like this. Conventional approaches, peer review and popular advocacy don’t seem adequate in controversial fields like mental health.