While I accept that their is much sense in what you say, [and I believe I generally give everyone a chance so to speak] there is obviously a "hard core" two or three, that are beyond help. Many times, I have started off reasonably with river, and from my experience, the more reasonable I am, the more willful ignorance and trolling develops. Most recent in a thread showing him illustrations and actual photographs of how gravitational lensing takes place, and it was simply met with the most ridiculous refusal to accept one could imagine. One tends to get rather brutal with such willful ignorance. And yes I know that my best shot would be to ignore him, which I am now doing on many occasions, and actually resurrecting some actual science threads, showing up his nonsense. It could also be said to be cruel to accuse a person of having phychopathic driven delusions of grandeur, [which I have done] but what else can be done when some Tom, Dick, or Harry, claims to know more then the reputable professional experts out there, from NASA, aLIGO, Virgo, ESA, etc. In reality, I do feel sorry for river on occasions after I have given him evidence of why he is wrong, and of his ignorance. Which is why now on some occasions, I'm choosing to ignore him rather then going through the whole sorry process, in showing him the irrationality of his claims.